Changes for page LSS-P - Communication Protocol

Last modified by Eric Nantel on 2024/07/03 09:42

From version < 22.1 >

edited by Coleman Benson
on 2023/07/18 09:47

To version < 29.1 >

edited by Coleman Benson
on 2023/07/25 15:16

< >

Change comment: There is no comment for this version

Summary

Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

@@ -14,7
          +14,7 @@
  = Action Commands =
--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"]] (described below). Action commands are sent serially to the servo's Rx pin and must be sent in the following format:
++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"]] (described below). Action commands are sent serially to the servo and must be sent in the following format:
 . Start with a number sign **#** (Unicode Character: U+0023)
 . Servo ID number as an integer (assigning an ID described below)
@@ -29,7
          +29,7 @@
  == Modifiers ==
--{{html clean="false" wiki="true" __cke_selected_macro="true"}}
++{{html clean="false" wiki="true"}}
  <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
  Modifiers can only be used with certain **action commands**. The format to include a modifier is:<div class="wikimodel-emptyline"></div>
@@ -46,8
          +46,9 @@
  This results in the servo with ID #5 rotating to a position (1800 in tenths of degrees) of 130.00 degrees in a time ("T") of 1500 milliseconds (1.5 seconds).<div class="wikimodel-emptyline"></div>
  <div class="wikimodel-emptyline"></div></div></div>
++<h2>Queries</h2>
  <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++Query commands request information from the servo. Query commands are also similar to action and configuration commands and must use the following format:<div class="wikimodel-emptyline"></div>
 . Start with a number sign **#** (Unicode Character: U+0023)
 . Servo ID number as an integer
@@ -71,10
          +71,12 @@
  This indicates that servo #5 is currently at 130.00 degrees (13000 tenths of degrees).
  <div class="wikimodel-emptyline"></div></div></div>
++<h2>Configurations</h2>
++
  <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
  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>
--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 of the same configuration commands are sent, one after the next, only the last configuration is used and stored.<div class="wikimodel-emptyline"></div>
++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. Configuration commands are not cumulative; this means that if two of the same configuration commands are sent, one after the next, only the last configuration is used and stored.<div class="wikimodel-emptyline"></div>
  The format to send a configuration command is identical to that of an action command:<div class="wikimodel-emptyline"></div>
@@ -84,43
          +84,43 @@
 . Configuration value in the correct units with no decimal
 . End with a carriage return **&#92;r** or **&lt;cr&gt;** Unicode Character (U+000D)<div class="wikimodel-emptyline"></div>
--Ex: #5CO-50&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5CO-500&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++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 -5.00 degrees (500 hundredths of degrees). Once the servo is powered off and on, zeroing the servo will cause it to move to -5.00 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>
  **Session vs Configuration Query**<div class="wikimodel-emptyline"></div>
  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>
--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>
++Ex: #5CSR10&lt;cr&gt; immediately sets the maximum speed for servo #5 to 10rpm (explained below) and changes the value in memory.<div class="wikimodel-emptyline"></div>
  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>
  #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>
--#5QSR1&lt;cr&gt; would return *5QSR20&lt;cr&gt; which represents the value in EEPROM
++#5QSR1&lt;cr&gt; would return *5QSR10&lt;cr&gt; which represents the value in EEPROM
  <div class="wikimodel-emptyline"></div></div></div>
  <div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++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 360.00 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 153350 (or 1533.50 degrees), taking the modulus would give 93.5 degrees (36000 * 4 + 9350 = 153350) as the absolute position (assuming no origin offset).<div class="wikimodel-emptyline"></div>
  [[image:LSS-servo-positions.jpg]]<div class="wikimodel-emptyline"></div>
  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>
--#1D-300&lt;cr&gt; This causes the servo to move to -30.0 degrees (green arrow)<div class="wikimodel-emptyline"></div>
++#1D-3000&lt;cr&gt; This causes the servo to move to -30.00 degrees (green arrow)<div class="wikimodel-emptyline"></div>
--#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>
++#1D21000&lt;cr&gt; This second position command is sent to the servo, which moves it to 210.00 degrees (orange arrow)<div class="wikimodel-emptyline"></div>
--#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>
++#1D-42000&lt;cr&gt; This next command rotates the servo counterclockwise to a position of -420.00 degrees (red arrow), which means one full rotation of 360 degrees plus 60.00 degrees (420.00 - 360.00), with a virtual position of -420.0 degrees.<div class="wikimodel-emptyline"></div>
--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>
++Although the final physical position would be the same as if the servo were commanded to move to -60.00 degrees, the servo is in fact at -420.00 degrees.<div class="wikimodel-emptyline"></div>
--#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>
++#1D48000&lt;cr&gt; This new command is sent which would then cause the servo to rotate from -420.00 degrees to 480.00 degrees (blue arrow), which would be a total of 900 degrees of clockwise rotation, or 2.5 complete rotations.<div class="wikimodel-emptyline"></div>
--#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>
++#1D33000&lt;cr&gt; would cause the servo to rotate from 480.0 degrees to 330.00 degrees (yellow arrow).<div class="wikimodel-emptyline"></div>
--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°].
++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 480.00 degrees before power is cycled, upon power up the servo's position will be read as +120.00 degrees from zero (assuming center position has not been modified). The virtual position range at power-up is [-180.00°, 180.00°].
  <div class="wikimodel-emptyline"></div></div></div>
  {{/html}}
@@ -202,250
          +202,82 @@
  == (% style="color:inherit; font-family:inherit" %)Communication Setup(%%) ==
--====== __Reset__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5RESET&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--This command does a "soft reset" and reverts all commands to those stored in EEPROM (i.e. configuration commands).
--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>
--</div></div>
--{{/html}}
--
--====== __Default & confirm__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5DEFAULT&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--EX: #5DEFAULT&lt;cr&gt; followed by #5CONFIRM&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--**Note:** After the CONFIRM command is sent, the servo will automatically perform a RESET.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
--
--====== __Update & confirm__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5UPDATE&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--EX: #5UPDATE&lt;cr&gt; followed by #5CONFIRM&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--**Note:** After the CONFIRM command is sent, the servo will automatically perform a RESET.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
--
--====== __Confirm__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5CONFIRM&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This command is used to confirm changes after a Default or Update command.<div class="wikimodel-emptyline"></div>
--
--**Note:** After the CONFIRM command is sent, the servo will automatically perform a RESET.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
--
  ======  ======
--====== __Identification Number (**ID**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
--
--Query Identification (**QID**)<div class="wikimodel-emptyline"></div>
--
--EX: #254QID&lt;cr&gt; might return *QID5&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--Configure ID (**CID**)<div class="wikimodel-emptyline"></div>
--
--Ex: #4CID5&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--</div></div>
--{{/html}}
--
--====== __Baud Rate__ ======
--
--{{html clean="false" wiki="true"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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, 750.0 kbps, 921.6 kbps. Servos are shipped with a baud rate set to 115200.<div class="wikimodel-emptyline"></div>
--
--Query Baud Rate (**QB**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QB&lt;cr&gt; might return *5QB115200&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--Configure Baud Rate (**CB**)<div class="wikimodel-emptyline"></div>
--
--**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>
--
--Ex: #5CB9600&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--Sending this command will change the baud rate associated with servo ID 5 to 9600 bits per second.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
--
--====== __Automatic Baud Rate__ ======
--
--{{html clean="false" wiki="true"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--This option allows the LSS to listen to it's serial input and select the right baudrate automatically.<div class="wikimodel-emptyline"></div>
--
--Query Automatic Baud Rate (**QABR**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QABR&lt;cr&gt; might return *5ABR0&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--Enable Baud Rate (**ABR**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QABR1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--Enable baudrate detection on first byte received after power-up.<div class="wikimodel-emptyline"></div>
--
--Ex: #5QABR2,30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--Enable baudrate detection on first byte received after power-up. If no data for 30 seconds enable detection again on next byte.<div class="wikimodel-emptyline"></div>
--
--Warning: ABR doesnt work well with LSS Config at the moment.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
--
  == Motion ==
  ====== __Position in Degrees (**D**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5D1456&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++Example: #5D1456<cr>
--Larger values are permitted and allow for multi-turn functionality using the concept of virtual position (explained above). <div class="wikimodel-emptyline"></div>
++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.
--Query Position in Degrees (**QD**)<div class="wikimodel-emptyline"></div>
++Larger values are permitted and allow for multi-turn functionality using the concept of virtual position (explained above).
--Example: #5QD&lt;cr&gt; might return *5QD132&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Query Position in Degrees (**QD**)
--This means the servo is located at 13.2 degrees.<div class="wikimodel-emptyline"></div>
++Example: #5QD<cr> might return *5QD132<cr>
--(% class="wikigeneratedid" id="H22.QueryTargetPositioninDegrees28QDT29" %)
--Query Target Position in Degrees (**QDT**)<div class="wikimodel-emptyline"></div>
++This means the servo is located at 13.2 degrees.
--Ex: #5QDT&lt;cr&gt; might return *5QDT6783&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Query Target Position in Degrees (**QDT**)
++Ex: #5QDT<cr> might return *5QDT6783<cr>
++
  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.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __(Relative) Move in Degrees (**MD**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5MD123&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Example: #5MD123<cr>
++
  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.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __Wheel Mode in Degrees (**WD**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5WD90&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++Ex: #5WD90<cr>
--Query Wheel Mode in Degrees (**QWD**)<div class="wikimodel-emptyline"></div>
++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).
--Ex: #5QWD&lt;cr&gt; might return *5QWD90&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Query Wheel Mode in Degrees (**QWD**)
++Ex: #5QWD<cr> might return *5QWD90<cr>
++
  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).
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __Wheel Mode in RPM (**WR**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5WR40&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++Ex: #5WR40<cr>
--Query Wheel Mode in RPM (**QWR**)<div class="wikimodel-emptyline"></div>
++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).
--Ex: #5QWR&lt;cr&gt; might return *5QWR40&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Query Wheel Mode in RPM (**QWR**)
++Ex: #5QWR<cr> might return *5QWR40<cr>
++
  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).
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--====== __Position in PWM (**P**)__ ======
++======  ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5P2334&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++====== __(Relative) Move in Degrees (**MD**)__ ======
--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>
++======
++Example: #5M1500<cr> ======
--Query Position in Pulse (**QP**)<div class="wikimodel-emptyline"></div>
++(% class="wikigeneratedid" %)
++====== 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. ======
--Example: #5QP&lt;cr&gt; might return *5QP2334<div class="wikimodel-emptyline"></div>
--
--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.
--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).
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
--====== __(Relative) Move in PWM (**M**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5M1500&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
--====== __Raw Duty-cycle Move (**RDM**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5RDM512&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--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>
--
--Query Move in Duty-cycle (**QMD**)<div class="wikimodel-emptyline"></div>
--
--Example: #5QMD&lt;cr&gt; might return *5QMD512<div class="wikimodel-emptyline"></div>
--
--This command queries the raw duty-cycle move value. 512 value means that the motor is rotating at 50% duty-cycle.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
  ====== __Query Status (**Q**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
--Ex: #5Q&lt;cr&gt; might return *5Q6&lt;cr&gt;, which indicates the motor is holding a position.<div class="wikimodel-emptyline"></div>
--</div></div>
--{{/html}}
++The status query describes what the servo is currently doing. The query returns an integer which must be looked up in the table below.
++Ex: #5Q<cr> might return *5Q6<cr>, which indicates the motor is holding a position.
++
  |(% style="width:25px" %) |***Value returned (Q)**|**Status**|**Detailed description**
  | |ex: *5Q0<cr>|0: Unknown|LSS is unsure / unknown state
  | |ex: *5Q1<cr>|1: Limp|Motor driving circuit is not powered and horn can be moved freely
@@ -463,12
          +463,9 @@
  Send a Q1 command to know which limit has been reached (described below).
  )))
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
--</div></div>
--{{/html}}
++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.
++
  |(% style="width:25px" %) |***Value returned (Q1)**|**Status**|**Detailed description**
  | |ex: *5Q0<cr>|No limits have been passed|Nothing is wrong
  | |ex: *5Q1<cr>|Current limit has been passed|Something cause the current to either spike, or remain too high for too long
@@ -477,353
          +477,157 @@
  ====== __Limp (**L**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5L&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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;.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
++Example: #5L<cr>
++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<cr>.
++
  ====== __Halt & Hold (**H**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5H&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Example: #5H<cr>
++
  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.)
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  == Motion Setup ==
--====== __Enable Motion Profile (**EM**)__ ======
++====== __Origin Offset (**O**)__ ======
--{{html clean="false" wiki="true"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--EM1 (Enable Motion Profile #1) is the default mode of the LSS and is an easy way to control the servo's position with a single (serial) position command. This mode uses a trapezoidal motion profile which takes care of acceleration, constant speed travel and deceleration. Once the actual position is within a certain value of the target, it switches to a holding algorithm. The LSS commands for Angular Acceleration and Deceleration (AA/CAA/AD/CAD) Angular Stiffness (AS/CAS) and Angular holding stiffness (AH/CAH) affect this motion profile. Modifiers like SD/S and T can be used in EM1.<div class="wikimodel-emptyline"></div>
--Ex: #5EM1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Example: #5O2400<cr>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).
--This command enables a trapezoidal motion profile for servo #5 <div class="wikimodel-emptyline"></div>
++[[image:https://wiki.lynxmotion.com/info/wiki/lynxmotion/download/lynxmotion-smart-servo-pro/lss-p-communication-protocol/WebHome/LSS-servo-default.jpg||alt="LSS-servo-default.jpg"]]
--Ex: #5EM0&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--This command will disable the built-in trapezoidal motion profile. As such, the servo will move at full speed to the target position using the D/MD action commands. Modifiers like SD/S or T cannot be used in EM0 mode. By default the Filter Position Counter, or "FPC" is active in EM0 mode to smooth out its operation. EM0 is suggested for applications where an external controller will be determining all incremental intermediate positions of the servo's motion, effectively replacing a trajectory manager. To prevent having to send position commands continuously to reach the desired position in EM0/FPC active (FPC >= 2), an internal position engine (IPE) repeats the last position command. Note that in EM0 mode, the servo will effectively always be in status: Holding (if using the query status command).
++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>
++[[image:https://wiki.lynxmotion.com/info/wiki/lynxmotion/download/lynxmotion-smart-servo-pro/lss-p-communication-protocol/WebHome/LSS-servo-origin.jpg||alt="LSS-servo-origin.jpg"]]
--Query Motion Profile (**QEM**)<div class="wikimodel-emptyline"></div>
--Ex: #5QEM&lt;cr&gt; might return *5QEM1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Origin Offset Query (**QO**)
--This command will query the motion profile. **0:** motion profile disabled / **1:** trapezoidal motion profile enabled.<div class="wikimodel-emptyline"></div>
++Example: #5QO<cr> might return *5QO-13
--Configure Motion Profile (**CEM**)<div class="wikimodel-emptyline"></div>
++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.
--Ex: #5CEM0&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Configure Origin Offset (**CO**)
--This command configures the motion profile and saves it in the EEPROM. The setting will be saved upon servo reset / power cycle.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
++Example: #5CO-24<cr>
--====== __Filter Position Count (**FPC**)__ ======
--
--{{html clean="false" wiki="true"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--The FPC value relates to the depth of a first order filter (exponential weighted average) over the position change. This has the effect of slowing down both acceleration and deceleration while still allowing the LSS to try to reach the desired position at maximum power at all times. A smaller FPC value will reduce the smoothing effect and a larger value will increase it. To prevent having to send position commands continuously to reach the desired position in EM0/FPC active (FPC >= 2), an internal position engine (IPE) has been put in place, which is also active by default.
--<div class="wikimodel-emptyline"></div>
--Ex: #5FPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--This command allows the user to change the Filter Position Count value for that session. <div class="wikimodel-emptyline"></div>
--
--Query Filter Position Count (**QFPC**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QFPC&lt;cr&gt; might return *5QFPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This command will query the Filter Position Count value.<div class="wikimodel-emptyline"></div>
--
--Configure Filter Position Count (**CFPC**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5CFPC10&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This command configures the Filter Position Count value and saves it in the EEPROM. The setting will be saved upon servo reset / power cycle.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
--====== __Origin Offset (**O**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5O2400&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--[[image:LSS-servo-default.jpg]]<div class="wikimodel-emptyline"></div>
--
--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>
--
--[[image:LSS-servo-origin.jpg]]<div class="wikimodel-emptyline"></div>
--
--Origin Offset Query (**QO**)<div class="wikimodel-emptyline"></div>
--
--Example: #5QO&lt;cr&gt; might return *5QO-13<div class="wikimodel-emptyline"></div>
--
--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>
--
--Configure Origin Offset (**CO**)<div class="wikimodel-emptyline"></div>
--
--Example: #5CO-24&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
  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.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __Angular Range (**AR**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Example: #5AR1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Example: #5AR1800<cr>
--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>
++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:
--[[image:LSS-servo-default.jpg]]<div class="wikimodel-emptyline"></div>
++[[image:https://wiki.lynxmotion.com/info/wiki/lynxmotion/download/lynxmotion-smart-servo-pro/lss-p-communication-protocol/WebHome/LSS-servo-default.jpg||alt="LSS-servo-default.jpg"]]
--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>
++Below, the angular range is restricted to 180.0 degrees, or -90.0 to +90.0. The center has remained unchanged.
--[[image:LSS-servo-ar.jpg]]<div class="wikimodel-emptyline"></div>
++[[image:https://wiki.lynxmotion.com/info/wiki/lynxmotion/download/lynxmotion-smart-servo-pro/lss-p-communication-protocol/WebHome/LSS-servo-ar.jpg||alt="LSS-servo-ar.jpg"]]
--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>
--[[image:LSS-servo-ar-o-1.jpg]]<div class="wikimodel-emptyline"></div>
++Finally, the angular range action command (ex. #5AR1800<cr>) and origin offset action command (ex. #5O-1200<cr>) are used to move both the center and limit the angular range:
--Query Angular Range (**QAR**)<div class="wikimodel-emptyline"></div>
++[[image:https://wiki.lynxmotion.com/info/wiki/lynxmotion/download/lynxmotion-smart-servo-pro/lss-p-communication-protocol/WebHome/LSS-servo-ar-o-1.jpg||alt="LSS-servo-ar-o-1.jpg"]]
--Example: #5QAR&lt;cr&gt; might return *5AR1800, indicating the total angular range is 180.0 degrees.<div class="wikimodel-emptyline"></div>
--Configure Angular Range (**CAR**)<div class="wikimodel-emptyline"></div>
++Query Angular Range (**QAR**)
--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.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
++Example: #5QAR<cr> might return *5AR1800, indicating the total angular range is 180.0 degrees.
--====== __Angular Stiffness (**AS**)__ ======
++Configure Angular Range (**CAR**)
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++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.
--A higher value of "angular stiffness":<div class="wikimodel-emptyline"></div>
--
--* The more torque will be applied to try to keep the desired position against external input / changes
--* 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>
--
--A lower value on the other hand:<div class="wikimodel-emptyline"></div>
--
--* Causes a slower acceleration to the travel speed, and a slower deceleration
--* Allows the target position to deviate more from its position before additional torque is applied to bring it back<div class="wikimodel-emptyline"></div>
--
--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>
--
--Ex: #5AS-2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
--Ex: #5QAS&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--Queries the value being used.<div class="wikimodel-emptyline"></div>
--
--Ex: #5CAS-2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--Writes the desired angular stiffness value to EEPROM.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
--====== __Angular Holding Stiffness (**AH**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
--
--Ex: #5AH3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This sets the holding stiffness for servo #5 to 3 for that session.<div class="wikimodel-emptyline"></div>
--
--Query Angular Holding Stiffness (**QAH**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QAH&lt;cr&gt; might return *5QAH3&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This returns the servo's angular holding stiffness value.<div class="wikimodel-emptyline"></div>
--
--Configure Angular Holding Stiffness (**CAH**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5CAH2&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This writes the angular holding stiffness of servo #5 to 2 to EEPROM.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
  ====== __Angular Acceleration (**AA**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++The default value for angular acceleration is 100. Accepts values of between 1 and 100. Increments of 10 degrees per second squared.
--Ex: #5AA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5AA30<cr>
--This sets the angular acceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
++This sets the angular acceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).
--Query Angular Acceleration (**QAA**)<div class="wikimodel-emptyline"></div>
++Query Angular Acceleration (**QAA**)
--Ex: #5QAA&lt;cr&gt; might return *5QAA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5QAA<cr> might return *5QAA30<cr>
--This returns the servo's angular acceleration in degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
++This returns the servo's angular acceleration in degrees per second squared (°/s^^2^^).
--Configure Angular Acceleration (**CAA**)<div class="wikimodel-emptyline"></div>
++Configure Angular Acceleration (**CAA**)
--Ex: #5CAA30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5CAA30<cr>
  This writes the angular acceleration of servo #5 to 30 degrees per second squared (°/s^^2^^) to EEPROM.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __Angular Deceleration (**AD**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++The default value for angular deceleration is 100. Accepts values of between 1 and 100. Increments of 10 degrees per second squared.
--Ex: #5AD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5AD30<cr>
--This sets the angular deceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
++This sets the angular deceleration for servo #5 to 30 degrees per second squared (°/s^^2^^).
--Query Angular Deceleration (**QAD**)<div class="wikimodel-emptyline"></div>
++Query Angular Deceleration (**QAD**)
--Ex: #5QAD&lt;cr&gt; might return *5QAD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5QAD<cr> might return *5QAD30<cr>
--This returns the servo's angular deceleration in degrees per second squared (°/s^^2^^).<div class="wikimodel-emptyline"></div>
++This returns the servo's angular deceleration in degrees per second squared (°/s^^2^^).
--Configure Angular Deceleration (**CAD**)<div class="wikimodel-emptyline"></div>
++Configure Angular Deceleration (**CAD**)
--Ex: #5CAD30&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5CAD30<cr>
--This writes the angular deceleration of servo #5 to 30 degrees per second squared (°/s^^2^^) to EEPROM.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
++This writes the angular deceleration of servo #5 to 30 degrees per second squared (°/s^^2^^) to EEPROM.
  ====== __Gyre Direction (**G**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--"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>
++"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.
--Ex: #5G-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++Ex: #5G-1<cr>
--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>
++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.
--Query Gyre Direction (**QG**)<div class="wikimodel-emptyline"></div>
++Query Gyre Direction (**QG**)Ex: #5QG<cr> might return *5QG-1<cr>
--Ex: #5QG&lt;cr&gt; might return *5QG-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
++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.
--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>
++Configure Gyre (**CG**)
--Configure Gyre (**CG**)<div class="wikimodel-emptyline"></div>
++Ex: #5CG-1<cr>
--Ex: #5CG-1&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
  This changes the gyre direction as described above and also writes to EEPROM.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
  ====== __First Position__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--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>
++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.Query First Position in Degrees (**QFD**)Ex: #5QFD<cr> might return *5QFD900<cr>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.Configure First Position in Degrees (**CFD**)Ex: #5CFD900<cr>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<cr>) results in the servo remaining limp upon power up. In order to remove the first position, send no value, ex: #5CFD<cr>
--Query First Position in Degrees (**QFD**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QFD&lt;cr&gt; might return *5QFD900&lt;cr&gt; <div class="wikimodel-emptyline"></div>
--
--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>
--
--Configure First Position in Degrees (**CFD**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5CFD900&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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;
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
--====== __Maximum Motor Duty (**MMD**)__ ======
--
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--This command allows the user to limit the duty cycle value sent from the servo's MCU to the DC Motor driver. The duty cycle limit value can be within the range of 255 to 1023. The default value is 1023. A typical use-case for this command is active compliance.<div class="wikimodel-emptyline"></div>
--
--Ex: #5MMD512&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--This will set the duty-cycle to 512 for servo with ID 5 for that session.<div class="wikimodel-emptyline"></div>
--
--Query Maximum Motor Duty (**QMMD**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QMMDD&lt;cr&gt; might return *5QMMD512&lt;cr&gt; <div class="wikimodel-emptyline"></div>
--
--This command returns the configured limit of the duty cycle value sent from the servo's MCU to the Motor Controller. The default value is 1023.
--<div class="wikimodel-emptyline"></div></div></div>
--{{/html}}
--
  ====== __Maximum Speed in Degrees (**SD**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5SD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++Ex: #5SD1800<cr>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.Query Speed in Degrees (**QSD**)Ex: #5QSD<cr> might return *5QSD1800<cr>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<cr> 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:
--Query Speed in Degrees (**QSD**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QSD&lt;cr&gt; might return *5QSD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
  |**Command sent**|**Returned value (1/10 °)**
--|ex: #5QSD&lt;cr&gt;|Session value for maximum speed (set by latest SD/SR command)
--|ex: #5QSD1&lt;cr&gt;|Configured maximum speed in EEPROM (set by CSD/CSR)
--|ex: #5QSD2&lt;cr&gt;|Instantaneous speed (same as QWD)
--|ex: #5QSD3&lt;cr&gt;|Target travel speed<div class="wikimodel-emptyline"></div>
++|ex: #5QSD<cr>|Session value for maximum speed (set by latest SD/SR command)
++|ex: #5QSD1<cr>|Configured maximum speed in EEPROM (set by CSD/CSR)
++|ex: #5QSD2<cr>|Instantaneous speed (same as QWD)
++|ex: #5QSD3<cr>|Target travel speed
--Configure Speed in Degrees (**CSD**)<div class="wikimodel-emptyline"></div>
++Configure Speed in Degrees (**CSD**)Ex: #5CSD1800<cr>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.
--Ex: #5CSD1800&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
--</div></div>
--{{/html}}
--
  ====== __Maximum Speed in RPM (**SR**)__ ======
--{{html wiki="true" clean="false"}}
--<div class="cmdcnt"><div class="cmdpad"></div><div class="cmdtxt">
--Ex: #5SR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
++Ex: #5SR45<cr>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.Query Speed in RPM (**QSR**)Ex: #5QSR<cr> might return *5QSR45<cr>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<cr> 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:
--Query Speed in RPM (**QSR**)<div class="wikimodel-emptyline"></div>
--
--Ex: #5QSR&lt;cr&gt; might return *5QSR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--
--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>
--
  |**Command sent**|**Returned value (1/10 °)**
--|ex: #5QSR&lt;cr&gt;|Session value for maximum speed (set by latest SD/SR command)
--|ex: #5QSR1&lt;cr&gt;|Configured maximum speed in EEPROM (set by CSD/CSR)
--|ex: #5QSR2&lt;cr&gt;|Instantaneous speed (same as QWD)
--|ex: #5QSR3&lt;cr&gt;|Target travel speed<div class="wikimodel-emptyline"></div>
++|ex: #5QSR<cr>|Session value for maximum speed (set by latest SD/SR command)
++|ex: #5QSR1<cr>|Configured maximum speed in EEPROM (set by CSD/CSR)
++|ex: #5QSR2<cr>|Instantaneous speed (same as QWD)
++|ex: #5QSR3<cr>|Target travel speed
--Configure Speed in RPM (**CSR**)<div class="wikimodel-emptyline"></div>
++Configure Speed in RPM (**CSR**)Ex: #5CSR45<cr>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.
--Ex: #5CSR45&lt;cr&gt;<div class="wikimodel-emptyline"></div>
--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>
--</div></div>
--{{/html}}
--
  == Modifiers ==
  ====== __Speed (**S**, **SD**) modifier__ ======

Changes for page LSS-P - Communication Protocol

Summary

Details

Navigation