Wiki source code of LSS - Communication Protocol

Version 173.1 by Eric Nantel on 2020/05/01 09:25
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1 (% class="wikigeneratedid" id="HTableofContents" %)
2 **Page Contents**
3
4 {{toc depth="3"/}}
5
6 = Serial Protocol =
7
8 The Lynxmotion Smart Servo (LSS) serial protocol was created in order to be as simple and straightforward as possible from a user perspective ("human readable format"), while at the same time staying compact and robust yet highly versatile. The protocol was based on Lynxmotion's SSC-32 & SSC-32U RC servo controllers and almost everything one might expect to be able to configure for a smart servomotor is available.
9
10 In order to be able to control each servo individually with commands, the first step should be to assign a different ID number to each servo (see details on CID [[here>>doc:||anchor="HIdentificationNumber28ID29"]]). Once this has been done, only the servo(s) which have been assigned to the ID sent as part of the command will follow that command. There is currently no CRC or checksum implemented as part of the protocol.
11
12 == Session ==
13
14 {{html wiki="true" clean="false"}}
15 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
16 A "session" is defined as the time between when the servo is powered ON to when it is powered OFF or reset.<div class="wikimodel-emptyline"></div>
17
18 **Note #1:** For a given session, the action related to a specific commands overrides the stored value in EEPROM.<div class="wikimodel-emptyline"></div>
19 **Note #2:** During the power-on / reset process the LSS cannot accept commands for a small amount of time (1.25 s).<div class="wikimodel-emptyline"></div>
20 You can ensure the LSS is ready by using a query command to check for response (ex: #[id]Q\r or #[id]QID\r). If the LSS is ready for commands (initialized) it will respond to the query. A timeout between 50-100 ms is recommended to compensate for drivers, OS and buffering delays.
21 <div class="wikimodel-emptyline"></div></div></div>
22 {{/html}}
23
24 == Action Commands ==
25
26 {{html wiki="true" clean="false"}}
27 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
28 Action commands tell the servo, within that session, to do something (i.e. "take an action"). The types of action commands which can be sent are described below, and they cannot be combined with other commands such as queries or configurations. Only one action command can be sent at a time. Action commands are session-specific, therefore once a servo is power cycled, it will not have any "memory" of previous actions or [[virtual positions>>||anchor="HVirtualAngularPosition"]]. Action commands are sent serially to the servo's Rx pin and must be sent in the following format:<div class="wikimodel-emptyline"></div>
29
30 1. Start with a number sign **#** (Unicode Character: U+0023)
31 1. Servo ID number as an integer
32 1. Action command (one or more letters, no whitespace, capital or lower case)
33 1. Action value in the correct units with no decimal
34 1. End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)
35
36 (((
37 Ex: #5D1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
38
39 This sends a serial command to all servo's RX pins which are connected to the bus and only servo(s) with ID #5 will move to a position (1800 in tenths of degrees) of 180.0 degrees. Any servo on the bus which does not have ID 5 will take no action when receiving this command.
40 <div class="wikimodel-emptyline"></div></div></div>
41 {{/html}}
42
43 == Modifiers ==
44
45 {{html wiki="true" clean="false"}}
46 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
47 Modifiers can only be used with certain **action commands**. The format to include a modifier is:<div class="wikimodel-emptyline"></div>
48
49 1. Start with a number sign **#** (Unicode Character: U+0023)
50 1. Servo ID number as an integer
51 1. Action command (one to three letters, no spaces, capital or lower case)
52 1. Action value in the correct units with no decimal
53 1. Modifier command (one letter to too letters)
54 1. Modifier value in the correct units with no decimal
55 1. End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)
56
57 Ex: #5D1800T1500&lt;cr&gt;<div class="wikimodel-emptyline"></div>
58
59 This results in the servo with ID #5 rotating to a position (1800 in tenths of degrees) of 180.0 degrees in a time ("T") of 1500 milliseconds (1.5 seconds).<div class="wikimodel-emptyline"></div>
60 <div class="wikimodel-emptyline"></div></div></div>
61 {{/html}}
62
63 == Query Commands ==
64
65 {{html wiki="true" clean="false"}}
66 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
67 Query commands request information from the servo. They are received via the Rx pin of the servo, and the servo's reply is sent via the servo's Tx pin. Using separate lines for Tx and Rx is called "full duplex". Query commands are also similar to action and configuration commands and must use the following format:<div class="wikimodel-emptyline"></div>
68
69 1. Start with a number sign **#** (Unicode Character: U+0023)
70 1. Servo ID number as an integer
71 1. Query command (one to four letters, no spaces, capital or lower case)
72 1. End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)<div class="wikimodel-emptyline"></div>
73
74 Ex: #5QD&lt;cr&gt; Query position in (tenth of) degrees for servo #5<div class="wikimodel-emptyline"></div>
75
76 The query will return a serial string (almost instantaneously) via the servo's Tx pin with the following format:
77
78 1. Start with an asterisk * (Unicode Character: U+0023)
79 1. Servo ID number as an integer
80 1. Query command (one to four letters, no spaces, capital letters)
81 1. The reported value in the units described, no decimals.
82 1. End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)<div class="wikimodel-emptyline"></div>
83
84 There is currently no option to control how fast a servo replies after it has received a query command, therefore when sending a query command to the bus, the controller should be prepared to immediately "listen" for and parse the reply. Sending multiple queries to multiple servos on a bus in fast succession may result in replies overlapping and giving incorrect or corrupt data. As such, the controller should receive a reply before sending a new query command. A reply to the query sent above might be:<div class="wikimodel-emptyline"></div>
85
86 Ex: *5QD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
87
88 This indicates that servo #5 is currently at 180.0 degrees (1800 tenths of degrees).
89 <div class="wikimodel-emptyline"></div></div></div>
90 {{/html}}
91
92 == Configuration Commands ==
93
94 {{html wiki="true" clean="false"}}
95 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
96 Configuration commands and corresponding values affect a servo's defaults which are written to and read from the servo's EEPROM.<div class="wikimodel-emptyline"></div>
97
98 These configurations are retained in memory after the servo is reset or power is cut / lost. Some configuration commands affect the session, while others do not. In the Command table below, the column "Session" denotes if the configuration command affects the session. Not all action commands have a corresponding configuration command and vice versa. More information about which configuration commands are retained when in RC mode can be found on the [[LSS - RC PWM page>>doc:lynxmotion-smart-servo.lss-radio-control-pwm.WebHome]]. Configuration commands are not cumulative. This means that if two same configuration commands are sent, one after the next, only the last configuration is used and stored.<div class="wikimodel-emptyline"></div>
99
100 The format to send a configuration command is identical to that of an action command:<div class="wikimodel-emptyline"></div>
101
102 1. Start with a number sign **#** (Unicode Character: U+0023)
103 1. Servo ID number as an integer
104 1. Configuration command (two to four letters, no spaces, capital or lower case)
105 1. Configuration value in the correct units with no decimal
106 1. End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)<div class="wikimodel-emptyline"></div>
107
108 Ex: #5CO-50&lt;cr&gt;<div class="wikimodel-emptyline"></div>
109
110 This configures an absolute origin offset ("CO") with respect to factory origin of servo with ID #5 and changes the offset for that session to -5.0 degrees (50 tenths of degrees). Once the servo is powered off and on, zeroing the servo will cause it to move to -5.0 degrees with respect to the factory origin and report its position as 0 degrees. Configuration commands can be undone / reset either by sending the servo's default value for that configuration, or by doing a factory reset that clears all configurations (through the button menu or with DEFAULT command described below).<div class="wikimodel-emptyline"></div>
111
112 **Session vs Configuration Query**<div class="wikimodel-emptyline"></div>
113
114 By default, the query command returns the session's value. Should no action commands have been sent to change the session value, it will return the value saved in EEPROM which will either be the servo's default, or modified with a configuration command. In order to query the value stored in EEPROM (configuration), add a '1' to the query command:<div class="wikimodel-emptyline"></div>
115
116 Ex: #5CSR20&lt;cr&gt; immediately sets the maximum speed for servo #5 to 20rpm (explained below) and changes the value in memory.<div class="wikimodel-emptyline"></div>
117
118 After RESET, a command of #5SR4&lt;cr&gt; sets the session's speed to 4rpm, but does not change the configuration value in memory. Therefore:<div class="wikimodel-emptyline"></div>
119
120 #5QSR&lt;cr&gt; or #5QSR0&lt;cr&gt; would return *5QSR4&lt;cr&gt; which represents the value for that session, whereas<div class="wikimodel-emptyline"></div>
121
122 #5QSR1&lt;cr&gt; would return *5QSR20&lt;cr&gt; which represents the value in EEPROM
123 <div class="wikimodel-emptyline"></div></div></div>
124 {{/html}}
125
126 == Virtual Angular Position ==
127
128 {{html wiki="true" clean="false"}}
129 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
130 The ability to store a "virtual angular position" is a feature which allows for rotation beyond 360 degrees, permitting multiple rotations of the output horn, moving the center position and more. The "absolute position" would be the angle of the output shaft with respect to a 360.0 degree circle and can be obtained by taking the modulus (with respect to 360 degrees) of the value. For example if the virtual position is reported as 15335 (or 1533.5 degrees), taking the modulus would give 93.5 degrees (3600 * 4 + 935 = 15335) as the absolute position (assuming no origin offset).<div class="wikimodel-emptyline"></div>
131
132 [[image:LSS-servo-positions.jpg]]<div class="wikimodel-emptyline"></div>
133
134 In this example, the gyre direction (explained below, a.k.a. "rotation direction") is positive (clockwise), and origin offset has not been modified. Each square represents 30 degrees. The following command is sent:<div class="wikimodel-emptyline"></div>
135
136 #1D-300&lt;cr&gt; This causes the servo to move to -30.0 degrees (green arrow)<div class="wikimodel-emptyline"></div>
137
138 #1D2100&lt;cr&gt; This second position command is sent to the servo, which moves it to 210.0 degrees (orange arrow)<div class="wikimodel-emptyline"></div>
139
140 #1D-4200&lt;cr&gt; This next command rotates the servo counterclockwise to a position of -420 degrees (red arrow), which means one full rotation of 360 degrees plus 60.0 degrees (420.0 - 360.0), with a virtual position of -420.0 degrees.<div class="wikimodel-emptyline"></div>
141
142 Although the final physical position would be the same as if the servo were commanded to move to -60.0 degrees, the servo is in fact at -420.0 degrees.<div class="wikimodel-emptyline"></div>
143
144 #1D4800&lt;cr&gt; This new command is sent which would then cause the servo to rotate from -420.0 degrees to 480.0 degrees (blue arrow), which would be a total of 900 degrees of clockwise rotation, or 2.5 complete rotations.<div class="wikimodel-emptyline"></div>
145
146 #1D3300&lt;cr&gt; would cause the servo to rotate from 480.0 degrees to 330.0 degrees (yellow arrow).<div class="wikimodel-emptyline"></div>
147
148 If the servo loses power or is power cycled, it also loses the virtual position associated with that session. For example, if the virtual position was 480.0 degrees before power is cycled, upon power up the servo's position will be read as +120.0 degrees from zero (assuming center position has not been modified). The virtual position range at power-up is [-180.0°, 180.0°].
149 <div class="wikimodel-emptyline"></div></div></div>
150 {{/html}}
151
152 = Command List =
153
154 **Latest firmware version currently : 368.29.14**
155
156 |(% colspan="10" style="color:orange; font-size:18px" %)**Communication Setup**
157 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Action**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
158 | |Soft **Reset**|(% style="text-align:center" %)RESET|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Soft reset. See command for details.
159 | |**Default** Configuration|(% style="text-align:center" %)DEFAULT|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Revert to firmware default values. See command for details
160 | |Firmware **Update** Mode|(% style="text-align:center" %)UPDATE|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Update firmware. See command for details.
161 | |**Confirm** Changes|(% style="text-align:center" %)CONFIRM|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |
162 | |**C**hange to **RC**|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)CRC|(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Change to RC mode 1 (position) or 2 (wheel).
163 | |**ID** #|(% style="text-align:center" %) |(% style="text-align:center" %)QID|(% style="text-align:center" %)CID|(% style="text-align:center" %) |(% style="text-align:center" %)✓|0| |Reset required after change. ID 254 is a "broadcast" which all servos respond to.
164 | |**B**audrate|(% style="text-align:center" %) |(% style="text-align:center" %)QB|(% style="text-align:center" %)CB|(% style="text-align:center" %) |(% style="text-align:center" %)✓|115200| |Reset required after change.
165
166 |(% colspan="10" style="color:orange; font-size:18px" %)**Motion**
167 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Action**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
168 | |Position in **D**egrees|(% style="text-align:center" %)D|(% style="text-align:center" %)QD/QDT|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |1/10°|
169 | |**M**ove in **D**egrees (relative)|(% style="text-align:center" %)MD|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |1/10°|
170 | |**W**heel mode in **D**egrees|(% style="text-align:center" %)WD|(% style="text-align:center" %)QWD/QVT|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |°/s|A.K.A. "Speed mode" or "Continuous rotation"
171 | |**W**heel mode in **R**PM|(% style="text-align:center" %)WR|(% style="text-align:center" %)QWR|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |RPM|A.K.A. "Speed mode" or "Continuous rotation"
172 | |Position in **P**WM|(% style="text-align:center" %)P|(% style="text-align:center" %)QP|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |us|Inherited from SSC-32 serial protocol
173 | |**M**ove in PWM (relative)|(% style="text-align:center" %)M|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |us|
174 | |**R**aw **D**uty-cycle **M**ove|(% style="text-align:center" %)RDM|(% style="text-align:center" %)QMD|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |-1023 to 1023 integer|Positive values : CW / Negative values : CCW
175 | |**Q**uery Status|(% style="text-align:center" %) |(% style="text-align:center" %)Q|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |1 to 8 integer|See command description for details
176 | |**L**imp|(% style="text-align:center" %)L|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |
177 | |**H**alt & Hold|(% style="text-align:center" %)H|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |
178
179 |(% colspan="10" style="color:orange; font-size:18px" %)**Motion Setup**
180 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Action**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
181 | |**E**nable **M**otion Profile|(% style="text-align:center" %)EM|(% style="text-align:center" %)QEM|(% style="text-align:center" %)CEM|(% style="text-align:center" %) |(% style="text-align:center" %)✓|1| |EM1: trapezoidal motion profile / EM0: no motion profile
182 | |**F**ilter **P**osition **C**ount|(% style="text-align:center" %)FPC|(% style="text-align:center" %)QFPC|(% style="text-align:center" %)CFPC|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|5| |Affects motion only when motion profile is disabled (EM0)
183 | |**O**rigin Offset|(% style="text-align:center" %)O|(% style="text-align:center" %)QO|(% style="text-align:center" %)CO|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|0|1/10°|
184 | |**A**ngular **R**ange|(% style="text-align:center" %)AR|(% style="text-align:center" %)QAR|(% style="text-align:center" %)CAR|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|1800|1/10°|
185 | |**A**ngular **S**tiffness|(% style="text-align:center" %)AS|(% style="text-align:center" %)QAS|(% style="text-align:center" %)CAS|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|0|-4 to +4 integer|Suggested values are between 0 to +4
186 | |**A**ngular **H**olding Stiffness |(% style="text-align:center" %)AH|(% style="text-align:center" %)QAH|(% style="text-align:center" %)CAH|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|4|-10 to +10 integer|
187 | |**A**ngular **A**cceleration|(% style="text-align:center" %)AA|(% style="text-align:center" %)QAA|(% style="text-align:center" %)CAA|(% style="text-align:center" %) |(% style="text-align:center" %)✓|100|°/s^^2^^|Increments of 10°/s^^2^^. Only when motion profile is enabled (EM1).
188 | |**A**ngular **D**eceleration|(% style="text-align:center" %)AD|(% style="text-align:center" %)QAD|(% style="text-align:center" %)CAD|(% style="text-align:center" %) |(% style="text-align:center" %)✓|100|°/s^^2^^|Increments of 10°/s^^2^^. Only when motion profile is enabled (EM1).
189 | |**G**yre Direction|(% style="text-align:center" %)G|(% style="text-align:center" %)QG|(% style="text-align:center" %)CG|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|1| |Gyre / rotation direction: 1= CW (clockwise) -1 = CCW (counter-clockwise)
190 | |**F**irst Position (**D**eg)|(% style="text-align:center" %) |(% style="text-align:center" %)QFD|(% style="text-align:center" %)CFD|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|No value|1/10°|Reset required after change.
191 | |**M**aximum **M**otor **D**uty|(% style="text-align:center" %)MMD|(% style="text-align:center" %)QMMD|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓|1023|255 to 1023 integer|
192 | |Maximum **S**peed in **D**egrees|(% style="text-align:center" %)SD|(% style="text-align:center" %)QSD|(% style="text-align:center" %)CSD|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|Max|°/s|SD overwrites SR / CSD overwrites CSR and vice-versa
193 | |Maximum **S**peed in **R**PM|(% style="text-align:center" %)SR|(% style="text-align:center" %)QSR|(% style="text-align:center" %)CSR|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓|Max|RPM|SD overwrites SR / CSD overwrites CSR and vice-versa
194
195 |(% colspan="10" style="color:orange; font-size:18px" %)**Modifiers**
196 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Modifier**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
197 | |**S**peed|(% style="text-align:center" %)S|(% style="text-align:center" %)QS|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |uS/s |For P action command
198 | |**S**peed in **D**egrees|(% style="text-align:center" %)SD|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |°/s|For D and MD action commands
199 | |**T**imed move|(% style="text-align:center" %)T|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |ms|Modifier only for P, D and MD. Time can change based on load
200 | |**C**urrent **H**old|(% style="text-align:center" %)CH|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |mA|Modifier for D, MD, WD and WR
201 | |**C**urrent **L**imp|(% style="text-align:center" %)CL|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |mA|Modifier for D, MD, WD and WR
202
203 |(% colspan="10" style="color:orange; font-size:18px" %)**Telemetry**
204 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Action**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
205 | |**Q**uery **V**oltage|(% style="text-align:center" %) |(% style="text-align:center" %)QV|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |mV|
206 | |**Q**uery **T**emperature|(% style="text-align:center" %) |(% style="text-align:center" %)QT|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |1/10°C|
207 | |**Q**uery **C**urrent|(% style="text-align:center" %) |(% style="text-align:center" %)QC|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| |mA|
208 | |**Q**uery **M**odel **S**tring|(% style="text-align:center" %) |(% style="text-align:center" %)QMS|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Returns the model of servo (ex: LSS-ST1, LSS-HS1, LSS-HT1)
209 | |**Q**uery **F**irmware Version|(% style="text-align:center" %) |(% style="text-align:center" %)QF|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |
210 | |**Q**uery Serial **N**umber|(% style="text-align:center" %) |(% style="text-align:center" %)QN|(% style="text-align:center" %) |(% style="text-align:center" %) |(% style="text-align:center" %)✓| | |Returns the unique serial number for the servo
211
212 |(% colspan="10" style="color:orange; font-size:18px" %)**RGB LED**
213 |(% style="width:25px" %) |(% style="width:200px" %)**Description**|(% style="text-align:center; width:100px" %)**Action**|(% style="text-align:center; width:75px" %)**Query**|(% style="text-align:center; width:75px" %)**Config**|(% style="text-align:center; width:75px" %)**RC**|(% style="text-align:center; width:75px" %)**Serial**|(% style="width:100px" %)**Default**|(% style="width:170px" %)**Unit**|**Notes**
214 | |**LED** Color|(% style="text-align:center" %)LED|(% style="text-align:center" %)QLED|(% style="text-align:center" %)CLED|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓| |0 to 7 integer|0=Off; 1=Red; 2=Green; 3=Blue; 4=Yellow; 5=Cyan; 6=Magenta; 7=White
215 | |**C**onfigure **L**ED **B**linking|(% style="text-align:center" %) |(% style="text-align:center" %)QLB|(% style="text-align:center" %)CLB|(% style="text-align:center" %)✓|(% style="text-align:center" %)✓| |0 to 63 integer|Reset required after change. See command for details.
216
217 = (% style="color:inherit; font-family:inherit" %)Details(%%) =
218
219 == (% style="color:inherit; font-family:inherit" %)Communication Setup(%%) ==
220
221 ====== __Reset__ ======
222
223 {{html wiki="true" clean="false"}}
224 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
225 Ex: #5RESET<cr><div class="wikimodel-emptyline"></div>
226 This command does a "soft reset" and reverts all commands to those stored in EEPROM (i.e. configuration commands).
227 Note: after a RESET command is received, the LSS will restart and perform initilization again, making it unavailable on the bus for a bit. See [[Session>>||anchor="HSession"]], note #2 for more details.<div class="wikimodel-emptyline"></div>
228 </div></div>
229 {{/html}}
230
231 ====== __Default & confirm__ ======
232
233 {{html wiki="true" clean="false"}}
234 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
235 Ex: #5DEFAULT<cr><div class="wikimodel-emptyline"></div>
236
237 This command sets in motion the reset of all values to the default values included with the version of the firmware installed on that servo. The servo then waits for the CONFIRM command. Any other command received will cause the servo to exit the DEFAULT function.<div class="wikimodel-emptyline"></div>
238
239 EX: #5DEFAULT<cr> followed by #5CONFIRM<cr><div class="wikimodel-emptyline"></div>
240
241 Since it it not common to have to restore all configurations, a confirmation command is needed after a firmware command is sent. Should any command other than CONFIRM be received by the servo after the firmware command has been received, it will exit the command.<div class="wikimodel-emptyline"></div>
242
243 **Note:** After the CONFIRM command is sent, the servo will automatically perform a RESET.<div class="wikimodel-emptyline"></div>
244 </div></div>
245 {{/html}}
246
247 ====== __Update & confirm__ ======
248
249 {{html wiki="true" clean="false"}}
250 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
251 Ex: #5UPDATE<cr><div class="wikimodel-emptyline"></div>
252
253 This command sets in motion the equivalent of a long button press when the servo is not powered in order to enter firmware update mode. This is useful should the button be broken or inaccessible. The servo then waits for the CONFIRM command. Any other command received will cause the servo to exit the UPDATE function.<div class="wikimodel-emptyline"></div>
254
255 EX: #5UPDATE<cr> followed by #5CONFIRM<cr><div class="wikimodel-emptyline"></div>
256
257 Since it it not common to have to update firmware, a confirmation command is needed after an UPDATE command is sent. Should any command other than CONFIRM be received by the servo after the firmware command has been received, it will leave the firmware action.<div class="wikimodel-emptyline"></div>
258
259 **Note:** After the CONFIRM command is sent, the servo will automatically perform a RESET.<div class="wikimodel-emptyline"></div>
260 </div></div>
261 {{/html}}
262
263 ====== __Configure RC Mode (**CRC**)__ ======
264
265 {{html wiki="true" clean="false"}}
266 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
267 This command puts the servo into RC mode (position or continuous), where it will only respond to RC PWM signal on the servo's Rx pin. In this mode, the servo will no longer accept serial commands. The servo can be placed back into smart mode by using the button menu.<div class="wikimodel-emptyline"></div>
268
269 |**Command sent**|**Note**
270 |ex: #5CRC1<cr>|Change to RC position mode.
271 |ex: #5CRC2<cr>|Change to RC continuous rotation (wheel) mode.
272 |ex: #5CRC*<cr>|Where * is any value other than 1 or 2 (or no value): stay in smart mode.<div class="wikimodel-emptyline"></div>
273
274 EX: #5CRC2<cr><div class="wikimodel-emptyline"></div>
275
276 This command would place the servo in RC wheel mode after a RESET or power cycle. Note that after a RESET or power cycle, the servo will be in RC mode and will not reply to serial commands. Using the command #5CRC<cr> or #5CRC3<cr> which requests that the servo remain in serial mode still requires a RESET command.<div class="wikimodel-emptyline"></div>
277
278 **Important note: **To revert from RC mode back to serial mode, the [[LSS - Button Menu>>doc:lynxmotion-smart-servo.lss-button-menu.WebHome]] is required. Should the button be inaccessible (or broken) when the servo is in RC mode and the user needs to change to serial mode, a 5V constant HIGH needs to be sent to the servo's Rx pin (RC PWM pin), **ensuring a common GND** and wait for 30 seconds. Normal RC PWM pulses should not exceed 2500 milliseconds. After 30 seconds, the servo will interpret this as a desired mode change and change to serial mode. This has been implemented as a fail safe.<div class="wikimodel-emptyline"></div>
279 </div></div>
280 {{/html}}
281
282 ====== __Identification Number (**ID**)__ ======
283
284 {{html wiki="true" clean="false"}}
285 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
286 A servo's identification number cannot be set "on the fly" and must be configured via the CID command described below. The factory default ID number for all servos is 0. Since smart servos are intended to be daisy chained, in order to respond differently from one another, the user must set different identification numbers. Servos with the same ID and baud rate will all receive and react to the same commands.<div class="wikimodel-emptyline"></div>
287
288 Query Identification (**QID**)<div class="wikimodel-emptyline"></div>
289
290 EX: #254QID<cr> might return *QID5<cr><div class="wikimodel-emptyline"></div>
291
292 When using the broadcast query ID command, it is best to only have one servo connected and thus receive only one reply. This is useful when you are not sure of the servo's ID, but don't want to change it. Using the broadcast command (ID 254) with only one servo will have that servo reply with its ID number. Alternatively, pushing the button upon startup and temporarily setting the servo ID to 255 will still result in the servo responding with its "real" ID.<div class="wikimodel-emptyline"></div>
293
294 Configure ID (**CID**)<div class="wikimodel-emptyline"></div>
295
296 Ex: #4CID5<cr><div class="wikimodel-emptyline"></div>
297
298 Setting a servo's ID in EEPROM is done via the CID command. All servos connected to the same serial bus that have will be assigned that ID. In most situations each servo must be set a unique ID, which means each servo must be connected individually to the serial bus and receive a unique CID number. It is best to do this before the servos are added to an assembly. Numbered stickers are provided to distinguish each servo after their ID is set, though you are free to use whatever alternative method you like. The servo must be RESET or power cycled in order for the new ID to take effect.<div class="wikimodel-emptyline"></div>
299 </div></div>
300 {{/html}}
301
302 ====== __Baud Rate__ ======
303
304 {{html wiki="true" clean="false"}}
305 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
306 A servo's baud rate cannot be set "on the fly" and must be configured via the CB command described below. The factory default baud rate for all servos is 115200. Since smart servos are intended to be daisy chained, in order to respond to the same serial command, all servos in a project should be set to the same baud rate. Setting different baud rates will have the servos respond differently and may create issues. Available baud rates are: 9600 bps, 19200 bps, 38400 bps, 57600 bps, 115.2 kbps, 230.4 kbps, 250.0 kbps, 460.8 kbps, 500.0 kbps. Servos are shipped with a baud rate set to 115200.<div class="wikimodel-emptyline"></div>
307
308 Query Baud Rate (**QB**)<div class="wikimodel-emptyline"></div>
309
310 Ex: #5QB<cr> might return *5QB115200<cr><div class="wikimodel-emptyline"></div>
311
312 Since the command to query the baud rate must be done at the servo's existing baud rate, it can simply be used to confirm the CB configuration command was correctly received before the servo is power cycled and the new baud rate takes effect.<div class="wikimodel-emptyline"></div>
313
314 Configure Baud Rate (**CB**)<div class="wikimodel-emptyline"></div>
315
316 **Important Note:** the servo's current session retains the given baud rate and the new baud rate will only take effect when the servo is power cycled / RESET.<div class="wikimodel-emptyline"></div>
317
318 Ex: #5CB9600<cr><div class="wikimodel-emptyline"></div>
319
320 Sending this command will change the baud rate associated with servo ID 5 to 9600 bits per second.<div class="wikimodel-emptyline"></div>
321 </div></div>
322 {{/html}}
323
324 == Motion ==
325
326 ====== __Position in Degrees (**D**)__ ======
327
328 {{html wiki="true" clean="false"}}
329 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
330 Example: #5D1456&lt;cr&gt;<div class="wikimodel-emptyline"></div>
331
332 This moves the servo to an angle of 145.6 degrees, where the center (0) position is centered. Negative values (ex. -176 representing -17.6 degrees) could also be used. A full circle would be from -1800 to 1800 degrees. A value of 2700 would be the same angle (absolute position) as -900, except the servo would move in a different direction. <div class="wikimodel-emptyline"></div>
333
334 Larger values are permitted and allow for multi-turn functionality using the concept of virtual position (explained above). <div class="wikimodel-emptyline"></div>
335
336 Query Position in Degrees (**QD**)<div class="wikimodel-emptyline"></div>
337
338 Example: #5QD&lt;cr&gt; might return *5QD132&lt;cr&gt;<div class="wikimodel-emptyline"></div>
339
340 This means the servo is located at 13.2 degrees.<div class="wikimodel-emptyline"></div>
341
342 (% class="wikigeneratedid" id="H22.QueryTargetPositioninDegrees28QDT29" %)
343 Query Target Position in Degrees (**QDT**)<div class="wikimodel-emptyline"></div>
344
345 Ex: #5QDT&lt;cr&gt; might return *5QDT6783&lt;cr&gt;<div class="wikimodel-emptyline"></div>
346
347 The query target position command returns the target virtual position during and after an action which results in a rotation of the servo horn. In the example above, the servo is rotating to a virtual position of 678.3 degrees. Should the servo not have a target position or be in wheel mode, it will respond with the last target position used.
348 <div class="wikimodel-emptyline"></div></div></div>
349 {{/html}}
350
351 ====== __(Relative) Move in Degrees (**MD**)__ ======
352
353 {{html wiki="true" clean="false"}}
354 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
355 Example: #5MD123&lt;cr&gt;<div class="wikimodel-emptyline"></div>
356
357 The relative move command causes the servo to read its current position and move the specified number of tenths of degrees in the corresponding position. For example if the servo is set to rotate CW (default) and an MD command of 123 is sent to the servo, it will cause the servo to rotate clockwise by 12.3 degrees. Negative commands would cause the servo to rotate in the opposite configured direction.
358 <div class="wikimodel-emptyline"></div></div></div>
359 {{/html}}
360
361 ====== __Wheel Mode in Degrees (**WD**)__ ======
362
363 {{html wiki="true" clean="false"}}
364 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
365 Ex: #5WD90&lt;cr&gt;<div class="wikimodel-emptyline"></div>
366
367 This command sets the servo to wheel mode where it will rotate in the desired direction at the selected speed. The example above would have the servo rotate at 90.0 degrees per second clockwise (assuming factory default configurations).<div class="wikimodel-emptyline"></div>
368
369 Query Wheel Mode in Degrees (**QWD**)<div class="wikimodel-emptyline"></div>
370
371 Ex: #5QWD&lt;cr&gt; might return *5QWD90&lt;cr&gt;<div class="wikimodel-emptyline"></div>
372
373 The servo replies with the angular speed in degrees per second. A negative sign would indicate the opposite direction (for factory default a negative value would be counter clockwise).
374 <div class="wikimodel-emptyline"></div></div></div>
375 {{/html}}
376
377 ====== __Wheel Mode in RPM (**WR**)__ ======
378
379 {{html wiki="true" clean="false"}}
380 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
381 Ex: #5WR40&lt;cr&gt;<div class="wikimodel-emptyline"></div>
382
383 This command sets the servo to wheel mode where it will rotate in the desired direction at the selected rpm. Wheel mode (a.k.a. "continuous rotation") has the servo operate like a geared DC motor. The servo's maximum rpm cannot be set higher than its physical limit at a given voltage. The example above would have the servo rotate at 40 rpm clockwise (assuming factory default configurations).<div class="wikimodel-emptyline"></div>
384
385 Query Wheel Mode in RPM (**QWR**)<div class="wikimodel-emptyline"></div>
386
387 Ex: #5QWR&lt;cr&gt; might return *5QWR40&lt;cr&gt;<div class="wikimodel-emptyline"></div>
388
389 The servo replies with the angular speed in rpm. A negative sign would indicate the opposite direction (for factory default a negative value would be counter clockwise).
390 <div class="wikimodel-emptyline"></div></div></div>
391 {{/html}}
392
393 ====== __Position in PWM (**P**)__ ======
394
395 {{html wiki="true" clean="false"}}
396 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
397 Example: #5P2334&lt;cr&gt;<div class="wikimodel-emptyline"></div>
398
399 The position in PWM pulses was retained in order to be backward compatible with the SSC-32 / 32U protocol. This relates the desired angle with an RC standard PWM signal and is further explained in the SSC-32 and [[SSC-32U manuals>>https://www.robotshop.com/media/files/pdf2/lynxmotion_ssc-32u_usb_user_guide.pdf#page=24]]. Without any modifications to configuration considered, and a ±90.0 degrees standard range where 1500 microseconds is centered, a PWM signal of 2334 would set the servo to 165.1 degrees. Valid values for P are [500, 2500]. Values outside this range are corrected / restricted to end points.<div class="wikimodel-emptyline"></div>
400
401 Query Position in Pulse (**QP**)<div class="wikimodel-emptyline"></div>
402
403 Example: #5QP&lt;cr&gt; might return *5QP2334<div class="wikimodel-emptyline"></div>
404
405 This command queries the current angular position in PWM "units". The user must take into consideration that the response includes any angular range and origin configurations in order to determine the actual angle.
406 Valid values for QP are {-500, [500, 2500], -2500}. Values outside the [500, 2500] range are given a negative corresponding end point value to indicate they are out of bounds (note that if the servo is physically located at one of the endpoints, it may return a negative number if it is a fraction of a degree beyond the position).
407 <div class="wikimodel-emptyline"></div></div></div>
408 {{/html}}
409
410 ====== __(Relative) Move in PWM (**M**)__ ======
411
412 {{html wiki="true" clean="false"}}
413 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
414 Example: #5M1500&lt;cr&gt;<div class="wikimodel-emptyline"></div>
415
416 The relative move in PWM command causes the servo to read its current position and move by the specified number of PWM signal. For example if the servo is set to rotate CW (default) and an M command of 1500 is sent to the servo, it will cause the servo to rotate clockwise by 90 degrees. Negative PWM value would cause the servo to rotate in the opposite configured direction.
417 <div class="wikimodel-emptyline"></div></div></div>
418 {{/html}}
419
420 ====== __Raw Duty-cycle Move (**RDM**)__ ======
421
422 {{html wiki="true" clean="false"}}
423 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
424 Example: #5RDM512&lt;cr&gt;<div class="wikimodel-emptyline"></div>
425
426 The raw duty-cycle move command (or free move command) will rotate the servo at a specified duty cycle value in wheel mode (a.k.a. "continuous rotation") like a geared DC motor.<div class="wikimodel-emptyline"></div>
427
428 The duty values range from 0 to 1023. Negative values will rotate the servo in the opposite direction (for factory default a negative value would be counter clockwise).<div class="wikimodel-emptyline"></div>
429
430 Query Move in Duty-cycle (**QMD**)<div class="wikimodel-emptyline"></div>
431
432 Example: #5QMD&lt;cr&gt; might return *5QMD512<div class="wikimodel-emptyline"></div>
433
434 This command queries the raw duty-cycle move value. 512 value means that the motor is rotating at 50% duty-cycle.
435 <div class="wikimodel-emptyline"></div></div></div>
436 {{/html}}
437
438 ====== __Query Status (**Q**)__ ======
439
440 {{html wiki="true" clean="false"}}
441 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
442 The status query describes what the servo is currently doing. The query returns an integer which must be looked up in the table below.<div class="wikimodel-emptyline"></div>
443
444 Ex: #5Q&lt;cr&gt; might return *5Q6&lt;cr&gt;, which indicates the motor is holding a position.<div class="wikimodel-emptyline"></div>
445 </div></div>
446 {{/html}}
447
448 |(% style="width:25px" %) |***Value returned (Q)**|**Status**|**Detailed description**
449 | |ex: *5Q0<cr>|0: Unknown|LSS is unsure / unknown state
450 | |ex: *5Q1<cr>|1: Limp|Motor driving circuit is not powered and horn can be moved freely
451 | |ex: *5Q2<cr>|2: Free moving|Servo is rotating in duty motion / free move using the RDM command
452 | |ex: *5Q3<cr>|3: Accelerating|Increasing speed from rest (or previous speed) towards travel speed
453 | |ex: *5Q4<cr>|4: Traveling|Moving at a stable speed
454 | |ex: *5Q5<cr>|5: Decelerating|Decreasing from travel speed towards final position.
455 | |ex: *5Q6<cr>|6: Holding|Keeping current position
456 | |ex: *5Q7<cr>|7: Outside limits|{More details coming soon}
457 | |ex: *5Q8<cr>|8: Stuck|Motor cannot perform request movement at current speed setting
458 | |ex: *5Q9<cr>|9: Blocked|Similar to stuck, but the motor is at maximum duty and still cannot move (i.e.: stalled)
459 | |ex: *5Q10<cr>|10: Safe Mode|(((
460 A safety limit has been exceeded (temperature, peak current or extended high current draw).
461
462 Send a Q1 command to know which limit has been reached (described below).
463 )))
464
465 {{html wiki="true" clean="false"}}
466 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
467 If a safety limit has been reached and exceeded, the LED will flash red and the servo will stop providing torque (no longer react to commands which cause the motor to rotate). In order to determine which limit has been reached, send a Q1 command. The servo must be RESET in order to return to normal operation, though if a limit is still detected (for example the servo is still too hot), it will revert back to Safe Mode.<div class="wikimodel-emptyline"></div>
468 </div></div>
469 {{/html}}
470
471 |(% style="width:25px" %) |***Value returned (Q1)**|**Status**|**Detailed description**
472 | |ex: *5Q0<cr>|No limits have been passed|Nothing is wrong
473 | |ex: *5Q1<cr>|Current limit has been passed|Something cause the current to either spike, or remain too high for too long
474 | |ex: *5Q2<cr>|Input voltage detected is below or above acceptable range|Check the voltage of your batteries or power source
475 | |ex: *5Q3<cr>|Temperature limit has been reached|The servo is too hot to continue operating safely.
476
477 ====== __Limp (**L**)__ ======
478
479 {{html wiki="true" clean="false"}}
480 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
481 Example: #5L&lt;cr&gt;<div class="wikimodel-emptyline"></div>
482
483 This action causes the servo to go "limp". The microcontroller will still be powered, but the motor will not. As an emergency safety feature, should the robot not be doing what it is supposed to or risks damage, use the broadcast ID to set all servos limp #254L&lt;cr&gt;.
484 <div class="wikimodel-emptyline"></div></div></div>
485 {{/html}}
486
487 ====== __Halt & Hold (**H**)__ ======
488
489 {{html wiki="true" clean="false"}}
490 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
491 Example: #5H&lt;cr&gt;<div class="wikimodel-emptyline"></div>
492
493 This command causes the servo to stop immediately and hold that angular position. It overrides whatever the servo might be doing at the time the command is received (accelerating, travelling, deccelerating, etc.)
494 <div class="wikimodel-emptyline"></div></div></div>
495 {{/html}}
496
497 == Motion Setup ==
498
499 ====== __Enable Motion Profile (**EM**)__ ======
500
501 {{html wiki="true" clean="false"}}
502 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
503 Ex: #5EM1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
504
505 This command enables a trapezoidal motion profile. By default, the trapezoidal motion profile is enabled. If the motion profile is enabled, angular acceleration (AA) and angular deceleration(AD) will have an effect on the motion. Also, SD/S and T modifiers can be used.<div class="wikimodel-emptyline"></div>
506
507 Ex: #5EM0&lt;cr&gt;<div class="wikimodel-emptyline"></div>
508
509 This command will disable the trapezoidal motion profile. As such, the servo will move at full speed for D/MD action commands. Angular acceleration (AA) and angular deceleration(AD) won't have an effect on motion in this mode and modifiers SD/S or T cannot be used.<div class="wikimodel-emptyline"></div>
510
511 Query Motion Profile (**QEM**)<div class="wikimodel-emptyline"></div>
512
513 Ex: #5QEM&lt;cr&gt; might return *5QEM1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
514
515 This command will query the motion profile. **0:** motion profile disabled / **1:** trapezoidal motion profile enabled.<div class="wikimodel-emptyline"></div>
516
517 Configure Motion Profile (**CEM**)<div class="wikimodel-emptyline"></div>
518
519 Ex: #5CEM0&lt;cr&gt;<div class="wikimodel-emptyline"></div>
520
521 This command configures the motion profile and saves it in the EEPROM. The setting will be saved upon servo reset / power cycle.
522 <div class="wikimodel-emptyline"></div></div></div>
523 {{/html}}
524
525 ====== __Filter Position Count (**FPC**)__ ======
526
527 {{html wiki="true" clean="false"}}
528 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
529 Ex: #5FPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
530 This command allows the user to change the Filter Position Count value for that session. <div class="wikimodel-emptyline"></div>
531
532 Query Filter Position Count (**QFPC**)<div class="wikimodel-emptyline"></div>
533
534 Ex: #5QFPC&lt;cr&gt; might return *5QFPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
535
536 This command will query the Filter Position Count value.<div class="wikimodel-emptyline"></div>
537
538 Configure Filter Position Count (**CFPC**)<div class="wikimodel-emptyline"></div>
539
540 Ex: #5CFPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
541
542 This command configures the Filter Position Count value and saves it in the EEPROM. The setting will be saved upon servo reset / power cycle.
543 <div class="wikimodel-emptyline"></div></div></div>
544 {{/html}}
545
546 ====== __Origin Offset (**O**)__ ======
547
548 {{html wiki="true" clean="false"}}
549 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
550 Example: #5O2400&lt;cr&gt;<div class="wikimodel-emptyline"></div>
551
552 This command allows you to change the origin of the servo in relation to the factory zero position for that session. As with all action commands, the setting will be lost upon servo reset / power cycle. Origin offset commands are not cumulative and always relate to factory zero. In the first image, the origin at factory offset '0' (centered).<div class="wikimodel-emptyline"></div>
553
554 [[image:LSS-servo-default.jpg]]<div class="wikimodel-emptyline"></div>
555
556 In the second image, the origin, and the corresponding angular range (explained below) have been shifted by +240.0 degrees:<div class="wikimodel-emptyline"></div>
557
558 [[image:LSS-servo-origin.jpg]]<div class="wikimodel-emptyline"></div>
559
560 Origin Offset Query (**QO**)<div class="wikimodel-emptyline"></div>
561
562 Example: #5QO&lt;cr&gt; might return *5QO-13<div class="wikimodel-emptyline"></div>
563
564 This allows you to query the angle (in tenths of degrees) of the origin in relation to the factory zero position. In this example, the new origin is at -1.3 degrees from the factory zero.<div class="wikimodel-emptyline"></div>
565
566 Configure Origin Offset (**CO**)<div class="wikimodel-emptyline"></div>
567
568 Example: #5CO-24&lt;cr&gt;<div class="wikimodel-emptyline"></div>
569
570 This command allows you to change the origin of the servo in relation to the factory zero position in EEPROM. The setting will be saved upon servo reset / power cycle. Origin offset configuration commands are not cumulative and always relate to factory zero. The new origin is also used in RC mode. In the example, the new origin will be at -2.4 degrees from the factory zero.
571 <div class="wikimodel-emptyline"></div></div></div>
572 {{/html}}
573
574 ====== __Angular Range (**AR**)__ ======
575
576 {{html wiki="true" clean="false"}}
577 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
578 Example: #5AR1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
579
580 This command allows you to temporarily change the total angular range of the servo in tenths of degrees. This applies to the Position in Pulse (P) command and RC mode. The default for (P) and RC mode is 1800 (180.0 degrees total, or ±90.0 degrees). The image below shows a standard -180.0 to +180.0 range, with no offset:<div class="wikimodel-emptyline"></div>
581
582 [[image:LSS-servo-default.jpg]]<div class="wikimodel-emptyline"></div>
583
584 Below, the angular range is restricted to 180.0 degrees, or -90.0 to +90.0. The center has remained unchanged.<div class="wikimodel-emptyline"></div>
585
586 [[image:LSS-servo-ar.jpg]]<div class="wikimodel-emptyline"></div>
587
588 Finally, the angular range action command (ex. #5AR1800&lt;cr&gt;) and origin offset action command (ex. #5O-1200&lt;cr&gt;) are used to move both the center and limit the angular range:<div class="wikimodel-emptyline"></div>
589
590 [[image:LSS-servo-ar-o-1.jpg]]<div class="wikimodel-emptyline"></div>
591
592 Query Angular Range (**QAR**)<div class="wikimodel-emptyline"></div>
593
594 Example: #5QAR&lt;cr&gt; might return *5AR1800, indicating the total angular range is 180.0 degrees.<div class="wikimodel-emptyline"></div>
595
596 Configure Angular Range (**CAR**)<div class="wikimodel-emptyline"></div>
597
598 This command allows you to change the total angular range of the servo in tenths of degrees in EEPROM. The setting will be saved upon servo reset / power cycle.
599 <div class="wikimodel-emptyline"></div></div></div>
600 {{/html}}
601
602 ====== __Angular Stiffness (**AS**)__ ======
603
604 {{html wiki="true" clean="false"}}
605 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
606 The servo's rigidity / angular stiffness can be thought of as (though not identical to) a damped spring in which the value affects the stiffness and embodies how much, and how quickly the servo tried keep the requested position against changes. There are no units.<div class="wikimodel-emptyline"></div>
607
608 A higher value of "angular stiffness":<div class="wikimodel-emptyline"></div>
609
610 * The more torque will be applied to try to keep the desired position against external input / changes
611 * The faster the motor will reach its intended travel speed and the motor will decelerate faster and nearer to its target position<div class="wikimodel-emptyline"></div>
612
613 A lower value on the other hand:<div class="wikimodel-emptyline"></div>
614
615 * Causes a slower acceleration to the travel speed, and a slower deceleration
616 * Allows the target position to deviate more from its position before additional torque is applied to bring it back<div class="wikimodel-emptyline"></div>
617
618 The default value for stiffness depending on the firmware may be 0 or 1. Greater values produce increasingly erratic behavior and the effect becomes extreme below -4 and above +4. Maximum values are -10 to +10.<div class="wikimodel-emptyline"></div>
619
620 Ex: #5AS-2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
621
622 This reduces the angular stiffness to -2 for that session, allowing the servo to deviate more around the desired position. This can be beneficial in many situations such as impacts (legged robots) where more of a "spring" effect is desired. Upon reset, the servo will use the value stored in memory, based on the last configuration command.<div class="wikimodel-emptyline"></div>
623
624 Ex: #5QAS&lt;cr&gt;<div class="wikimodel-emptyline"></div>
625
626 Queries the value being used.<div class="wikimodel-emptyline"></div>
627
628 Ex: #5CAS-2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
629
630 Writes the desired angular stiffness value to EEPROM.
631 <div class="wikimodel-emptyline"></div></div></div>
632 {{/html}}
633
634 ====== __Angular Holding Stiffness (**AH**)__ ======
635
636 {{html wiki="true" clean="false"}}
637 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
638 The angular holding stiffness determines the servo's ability to hold a desired position under load. The default value for stiffness depending on the firmware may be 0 or 1. Greater values produce increasingly erratic behavior and the effect becomes extreme below -4 and above +4. Maximum values are -10 to +10.<div class="wikimodel-emptyline"></div>
639
640 Ex: #5AH3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
641
642 This sets the holding stiffness for servo #5 to 3 for that session.<div class="wikimodel-emptyline"></div>
643
644 Query Angular Holding Stiffness (**QAH**)<div class="wikimodel-emptyline"></div>
645
646 Ex: #5QAH&lt;cr&gt; might return *5QAH3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
647
648 This returns the servo's angular holding stiffness value.<div class="wikimodel-emptyline"></div>
649
650 Configure Angular Holding Stiffness (**CAH**)<div class="wikimodel-emptyline"></div>
651
652 Ex: #5CAH2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
653
654 This writes the angular holding stiffness of servo #5 to 2 to EEPROM.
655 <div class="wikimodel-emptyline"></div></div></div>
656 {{/html}}
657
658 ====== __Angular Acceleration (**AA**)__ ======
659
660 {{html wiki="true" clean="false"}}
661 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
662 The default value for angular acceleration is 100. Accepts values of between 1 and 100. Increments of 10 degrees per second squared.<div class="wikimodel-emptyline"></div>
663
664 Ex: #5AA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
665
666 This sets the angular acceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
667
668 Query Angular Acceleration (**QAA**)<div class="wikimodel-emptyline"></div>
669
670 Ex: #5QAA&lt;cr&gt; might return *5QAA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
671
672 This returns the servo's angular acceleration in degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
673
674 Configure Angular Acceleration (**CAA**)<div class="wikimodel-emptyline"></div>
675
676 Ex: #5CAA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
677
678 This writes the angular acceleration of servo #5 to 30 degrees per second squared (°/s^^2^^) to EEPROM.
679 <div class="wikimodel-emptyline"></div></div></div>
680 {{/html}}
681
682 ====== __Angular Deceleration (**AD**)__ ======
683
684 {{html wiki="true" clean="false"}}
685 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
686 The default value for angular deceleration is 100. Accepts values of between 1 and 100. Increments of 10 degrees per second squared.<div class="wikimodel-emptyline"></div>
687
688 Ex: #5AD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
689
690 This sets the angular deceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
691
692 Query Angular Deceleration (**QAD**)<div class="wikimodel-emptyline"></div>
693
694 Ex: #5QAD&lt;cr&gt; might return *5QAD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
695
696 This returns the servo's angular deceleration in degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
697
698 Configure Angular Deceleration (**CAD**)<div class="wikimodel-emptyline"></div>
699
700 Ex: #5CAD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
701
702 This writes the angular deceleration of servo #5 to 30 degrees per second squared (°/s^^2^^) to EEPROM.
703 <div class="wikimodel-emptyline"></div></div></div>
704 {{/html}}
705
706 ====== __Gyre Direction (**G**)__ ======
707
708 {{html wiki="true" clean="false"}}
709 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
710 "Gyre" is defined as a circular course or motion. The effect of changing the gyre direction is as if you were to use a mirror image of a circle. By default: CW = 1; CCW = -1.<div class="wikimodel-emptyline"></div>
711
712 Ex: #5G-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
713
714 This command will cause servo #5's positions to be inverted, effectively causing the servo to rotate in the opposite direction given the same command. For example in a 2WD robot, servos are often physically installed back to back, therefore setting one of the servos to a negative gyration, the same wheel command (ex WR30) to both servos will cause the robot to move forward or backward rather than rotate.<div class="wikimodel-emptyline"></div>
715
716 Query Gyre Direction (**QG**)<div class="wikimodel-emptyline"></div>
717
718 Ex: #5QG&lt;cr&gt; might return *5QG-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
719
720 The value returned above means the servo is in a counter-clockwise gyration. Sending a #5WR30 command will rotate the servo in a counter-clockwise gyration at 30 RPM.<div class="wikimodel-emptyline"></div>
721
722 Configure Gyre (**CG**)<div class="wikimodel-emptyline"></div>
723
724 Ex: #5CG-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
725
726 This changes the gyre direction as described above and also writes to EEPROM.
727 <div class="wikimodel-emptyline"></div></div></div>
728 {{/html}}
729
730 ====== __First Position__ ======
731
732 {{html wiki="true" clean="false"}}
733 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
734 In certain cases, a user might want to have the servo move to a specific angle upon power up; we refer to this as "first position" (a.k.a. "initial position"). The factory default has no first position value stored in EEPROM and therefore upon power up, the servo remains limp until a position (or hold command) is assigned. Note that the number should be restricted to -1790 (-179.0 degrees) to +1790 (179.0 degrees) and values beyond this will be changed to 1800. <div class="wikimodel-emptyline"></div>
735
736 Query First Position in Degrees (**QFD**)<div class="wikimodel-emptyline"></div>
737
738 Ex: #5QFD&lt;cr&gt; might return *5QFD900&lt;cr&gt; <div class="wikimodel-emptyline"></div>
739
740 The reply above indicates that servo with ID 5 has a first position of 90.0 degrees. If there is no first position value stored, the reply will be DIS.<div class="wikimodel-emptyline"></div>
741
742 Configure First Position in Degrees (**CFD**)<div class="wikimodel-emptyline"></div>
743
744 Ex: #5CD900&lt;cr&gt;<div class="wikimodel-emptyline"></div>
745
746 This configuration command means the servo, when set to smart mode, will immediately move to 90.0 degrees upon power up. Sending a CFD command without a number (Ex. #5CFD&lt;cr&gt;) results in the servo remaining limp upon power up. In order to remove the first position, send no value, ex: #5CFD&lt;cr&gt;
747 <div class="wikimodel-emptyline"></div></div></div>
748 {{/html}}
749
750 ====== __Maximum Speed in Degrees (**SD**)__ ======
751
752 {{html wiki="true" clean="false"}}
753 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
754 Ex: #5SD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
755 This command sets the servo's maximum speed for motion commands in tenths of degrees per second for that session. In the example above, the servo's maximum speed for that session would be set to 180.0 degrees per second. The servo's maximum speed cannot be set higher than its physical limit at a given voltage. The SD action command overrides CSD (described below) for that session. Upon reset or power cycle, the servo reverts to the value associated with CSD as described below. Note that SD and SR (described below) are effectively the same, but allow the user to specify the speed in either unit. The last command (either SR or SD) received is what the servo uses for that session.<div class="wikimodel-emptyline"></div>
756
757 Query Speed in Degrees (**QSD**)<div class="wikimodel-emptyline"></div>
758
759 Ex: #5QSD&lt;cr&gt; might return *5QSD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
760
761 By default QSD will return the current session value, which is set to the value of CSD as reset/power cycle and changed whenever an SD/SR command is processed. If #5QSD1&lt;cr&gt; is sent, the configured maximum speed (CSD value) will be returned instead. You can also query the current speed using "2" and the current target travel speed using "3". See the table below for an example:<div class="wikimodel-emptyline"></div>
762
763 |**Command sent**|**Returned value (1/10 °)**
764 |ex: #5QSD&lt;cr&gt;|Session value for maximum speed (set by latest SD/SR command)
765 |ex: #5QSD1&lt;cr&gt;|Configured maximum speed in EEPROM (set by CSD/CSR)
766 |ex: #5QSD2&lt;cr&gt;|Instantaneous speed (same as QWD)
767 |ex: #5QSD3&lt;cr&gt;|Target travel speed<div class="wikimodel-emptyline"></div>
768
769 Configure Speed in Degrees (**CSD**)<div class="wikimodel-emptyline"></div>
770
771 Ex: #5CSD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
772 Using the CSD command sets the servo's maximum speed which is saved in EEPROM. In the example above, the servo's maximum speed will be set to 180.0 degrees per second. When the servo is powered on (or after a reset), the CSD value is used. Note that CSD and CSR (described below) are effectively the same, but allow the user to specify the speed in either unit. The last command (either CSR or CSD) is what the servo uses for that session.<div class="wikimodel-emptyline"></div>
773 </div></div>
774 {{/html}}
775
776 ====== __Maximum Speed in RPM (**SR**)__ ======
777
778 {{html wiki="true" clean="false"}}
779 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
780 Ex: #5SR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
781 This command sets the servo's maximum speed for motion commands in rpm for that session. In the example above, the servo's maximum speed for that session would be set to 45rpm. The servo's maximum speed cannot be set higher than its physical limit at a given voltage. SR overrides CSR (described below) for that session. Upon reset or power cycle, the servo reverts to the value associated with CSR as described below. Note that SD (described above) and SR are effectively the same, but allow the user to specify the speed in either unit. The last command (either SR or SD) received is what the servo uses for that session.<div class="wikimodel-emptyline"></div>
782
783 Query Speed in RPM (**QSR**)<div class="wikimodel-emptyline"></div>
784
785 Ex: #5QSR&lt;cr&gt; might return *5QSR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
786
787 By default QSR will return the current session value, which is set to the value of CSR as reset/power cycle and changed whenever an SD/SR command is processed. If #5QSR1&lt;cr&gt; is sent, the configured maximum speed (CSR value) will be returned instead. You can also query the current speed using "2" and the current target travel speed using "3". See the table below for an example:<div class="wikimodel-emptyline"></div>
788
789 |**Command sent**|**Returned value (1/10 °)**
790 |ex: #5QSR&lt;cr&gt;|Session value for maximum speed (set by latest SD/SR command)
791 |ex: #5QSR1&lt;cr&gt;|Configured maximum speed in EEPROM (set by CSD/CSR)
792 |ex: #5QSR2&lt;cr&gt;|Instantaneous speed (same as QWD)
793 |ex: #5QSR3&lt;cr&gt;|Target travel speed<div class="wikimodel-emptyline"></div>
794
795 Configure Speed in RPM (**CSR**)<div class="wikimodel-emptyline"></div>
796
797 Ex: #5CSR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
798 Using the CSR command sets the servo's maximum speed which is saved in EEPROM. In the example above, the servo's maximum speed will be set to 45rpm. When the servo is powered on (or after a reset), the CSR value is used. Note that CSD and CSR are effectively the same, but allow the user to specify the speed in either unit. The last command (either CSR or CSD) received is what the servo uses for that session.<div class="wikimodel-emptyline"></div>
799 </div></div>
800 {{/html}}
801
802 == Modifiers ==
803
804 ====== __Speed (**S**, **SD**) modifier__ ======
805
806 {{html wiki="true" clean="false"}}
807 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
808 Example: #5P1500S750&lt;cr&gt;<div class="wikimodel-emptyline"></div>
809 Modifier (S) is only for a position (P) action and determines the speed of the move in microseconds per second. A speed of 750 microseconds would cause the servo to rotate from its current position to the desired position at a speed of 750 microseconds per second. This command is in place to ensure backwards compatibility with the SSC-32 / 32U protocol.<div class="wikimodel-emptyline"></div>
810 Example: #5D0SD180&lt;cr&gt;<div class="wikimodel-emptyline"></div>
811 Modifier (SD) is only for a position (D) or relative position (MD) action and determines the speed of the move in degrees per second. A speed modifier (SD) of 180 would cause the servo to rotate from its current position to the desired absolute or relative position at a speed of 180 degrees per second.<div class="wikimodel-emptyline"></div>
812 Query Speed (**QS**)<div class="wikimodel-emptyline"></div>
813 Example: #5QS&lt;cr&gt; might return *5QS300&lt;cr&gt;<div class="wikimodel-emptyline"></div>
814 This command queries the current speed in microseconds per second.<div class="wikimodel-emptyline"></div>
815 </div></div>
816 {{/html}}
817
818 ====== __Timed move (**T**) modifier__ ======
819
820 {{html wiki="true" clean="false"}}
821 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
822 Example: #5P1500T2500&lt;cr&gt;<div class="wikimodel-emptyline"></div>
823
824 Timed move can be used only as a modifier for a position (P, D, MD) actions. The units are in milliseconds, so a timed move of 2500 milliseconds would cause the servo to rotate from its current position to the desired position in 2.5 seconds. The onboard controller will attempt to ensure that the move is performed entirely at the desired velocity, though differences in torque may cause it to not be exact. This command is in place to ensure backwards compatibility with the SSC-32 / 32U protocol.<div class="wikimodel-emptyline"></div>
825 **Note:** If the calculated speed at which a servo must rotate for a timed move is greater than its maximum speed (which depends on voltage and load), then it will move at its maximum speed, and the time of the move may be longer than requested.<div class="wikimodel-emptyline"></div>
826 </div></div>
827 {{/html}}
828
829 ====== __Current Halt & Hold (**CH**) modifier__ ======
830
831 {{html wiki="true" clean="false"}}
832 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
833 Example: #5D1423CH400&lt;cr&gt;<div class="wikimodel-emptyline"></div>
834
835 This has servo with ID 5 move to 142.3 degrees but, should it detect a current of 400mA or higher before it reaches the desired position, will immediately halt and hold position.<div class="wikimodel-emptyline"></div>
836 This modifier can be added to the following actions: D; MD; WD; WR.<div class="wikimodel-emptyline"></div>
837 </div></div>
838 {{/html}}
839
840 ====== __Current Limp (**CL**) modifier__ ======
841
842 {{html wiki="true" clean="false"}}
843 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
844 Example: #5D1423CL400&lt;cr&gt;<div class="wikimodel-emptyline"></div>
845
846 This has servo with ID 5 move to 142.3 degrees but, should it detect a current of 400mA or higher before it reaches the desired position, will immediately go limp.<div class="wikimodel-emptyline"></div>
847 This modifier can be added to the following actions: D; MD; WD; WR.<div class="wikimodel-emptyline"></div>
848 </div></div>
849 {{/html}}
850
851 == Telemetry ==
852
853 ====== __Query Voltage (**QV**)__ ======
854
855 {{html wiki="true" clean="false"}}
856 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
857 Ex: #5QV&lt;cr&gt; might return *5QV11200&lt;cr&gt;<div class="wikimodel-emptyline"></div>
858 The number returned is in milliVolts, so in the case above, servo with ID 5 has an input voltage of 11.2V.<div class="wikimodel-emptyline"></div>
859 </div></div>
860 {{/html}}
861
862 ====== __Query Temperature (**QT**)__ ======
863
864 {{html wiki="true" clean="false"}}
865 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
866 Ex: #5QT&lt;cr&gt; might return *5QT564&lt;cr&gt;<div class="wikimodel-emptyline"></div>
867 The units are in tenths of degrees Celcius, so in the example above, the servo's internal temperature is 56.4 degrees C. To convert from degrees Celcius to degrees Farenheit, multiply by 1.8 and add 32. Therefore 56.4C = 133.52F.<div class="wikimodel-emptyline"></div>
868 </div></div>
869 {{/html}}
870
871 ====== __Query Current (**QC**)__ ======
872
873 {{html wiki="true" clean="false"}}
874 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
875 Ex: #5QC&lt;cr&gt; might return *5QC140&lt;cr&gt;<div class="wikimodel-emptyline"></div>
876 The units are in milliamps, so in the example above, the servo is consuming 140mA, or 0.14A.<div class="wikimodel-emptyline"></div>
877 </div></div>
878 {{/html}}
879
880 ====== __Query Model String (**QMS**)__ ======
881
882 {{html wiki="true" clean="false"}}
883 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
884 Ex: #5QMS&lt;cr&gt; might return *5QMSLSS-HS1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
885 This reply means that the servo model is LSS-HS1: a high speed servo, first revision.<div class="wikimodel-emptyline"></div>
886 </div></div>
887 {{/html}}
888
889 ====== __Query Firmware (**QF**)__ ======
890
891 {{html wiki="true" clean="false"}}
892 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
893 Ex: #5QF&lt;cr&gt; might return *5QF368&lt;cr&gt;<div class="wikimodel-emptyline"></div>
894 The number in the reply represents the firmware version, in this example being 368.<div class="wikimodel-emptyline"></div>
895 The command #5QF3&lt;cr&gt; can also be sent and the servo will reply with a 3 numbers firmware version, for example, 368.29.14<div class="wikimodel-emptyline"></div>
896 </div></div>
897 {{/html}}
898
899 ====== __Query Serial Number (**QN**)__ ======
900
901 {{html wiki="true" clean="false"}}
902 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
903 Ex: #5QN&lt;cr&gt; might return *5QN12345678&lt;cr&gt;<div class="wikimodel-emptyline"></div>
904 The number in the response (12345678) would be the servo's serial number which is set and should not be changed by the user.<div class="wikimodel-emptyline"></div>
905 </div></div>
906 {{/html}}
907
908 == RGB LED ==
909
910 ====== __LED Color (**LED**)__ ======
911
912 {{html wiki="true" clean="false"}}
913 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
914 Ex: #5LED3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
915 This action sets the servo's RGB LED color for that session.The LED can be used for aesthetics, or (based on user code) to provide visual status updates. Using timing can create patterns.<div class="wikimodel-emptyline"></div>
916 0=Off (black); 1=Red 2=Green; 3=Blue; 4=Yellow; 5=Cyan; 6=Magenta; 7=White;<div class="wikimodel-emptyline"></div>
917 Query LED Color (**QLED**)<div class="wikimodel-emptyline"></div>
918 Ex: #5QLED&lt;cr&gt; might return *5QLED5&lt;cr&gt;<div class="wikimodel-emptyline"></div>
919 This simple query returns the indicated servo's LED color.<div class="wikimodel-emptyline"></div>
920 Configure LED Color (**CLED**)<div class="wikimodel-emptyline"></div>
921 Ex: #5CLED3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
922 Configuring the LED color via the CLED command sets the startup color of the servo after a reset or power cycle. Note that it also changes the session's LED color immediately as well. The command above will configure the servo's LED to a Blue color.<div class="wikimodel-emptyline"></div>
923 </div></div>
924 {{/html}}
925
926 ====== __Configure LED Blinking (**CLB**)__ ======
927
928 {{html wiki="true" clean="false"}}
929 <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
930 This command allows you to control when the RGB LED will blink the user set color (see RGB LED command for details). This is very useful when visually seeing what the servo is doing. You can turn on or off blinking for various LSS status. The command requires that the servo be RESET. Here is the list and their associated value:<div class="wikimodel-emptyline"></div>
931
932 (% style="width:195px" %)
933 |(% style="width:134px" %)**Blink While:**|(% style="width:58px" %)**#**
934 |(% style="width:134px" %)No blinking|(% style="width:58px" %)0
935 |(% style="width:134px" %)Limp|(% style="width:58px" %)1
936 |(% style="width:134px" %)Holding|(% style="width:58px" %)2
937 |(% style="width:134px" %)Accelerating|(% style="width:58px" %)4
938 |(% style="width:134px" %)Decelerating|(% style="width:58px" %)8
939 |(% style="width:134px" %)Free|(% style="width:58px" %)16
940 |(% style="width:134px" %)Travelling|(% style="width:58px" %)32
941 |(% style="width:134px" %)Always blink|(% style="width:58px" %)63<div class="wikimodel-emptyline"></div>
942
943 To set blinking, use CLB with the value of your choosing. To activate blinking in multiple status, simply add together the values of the corresponding status. See examples below:<div class="wikimodel-emptyline"></div>
944 Ex: #5CLB0<cr> to turn off all blinking (LED always solid)<div class="wikimodel-emptyline"></div>
945 Ex: #5CLB1<cr> only blink when limp (1)<div class="wikimodel-emptyline"></div>
946 Ex: #5CLB2<cr> only blink when holding (2)<div class="wikimodel-emptyline"></div>
947 Ex: #5CLB12<cr> only blink when accel or decel (accel 4 + decel 8 = 12)<div class="wikimodel-emptyline"></div>
948 Ex: #5CLB48<cr> only blink when free or travel (free 16 + travel 32 = 48)<div class="wikimodel-emptyline"></div>
949 Ex: #5CLB63<cr> blink in all status (1 + 2 + 4 + 8 + 16 + 32)<div class="wikimodel-emptyline"></div>
950 RESETTING the servo is needed.<div class="wikimodel-emptyline"></div>
951 </div></div>
952 {{/html}}
953
954 = RGB LED Patterns =
955
956 The LED patterns below do not include those which are part of the button menu, which can be found here: [[LSS Button Menu>>doc:lynxmotion-smart-servo.lss-button-menu.WebHome]]
957
958 [[image:LSS - LED Patterns.png]]
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