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XC430-W240

Specifications

Item Specifications
MCU ARM CORTEX-M3 (72 [MHz], 32Bit)
Position Sensor Contactless absolute encoder (12Bit, 360 [°])
Maker : ams(www.ams.com), Part No : AS5601
Motor Coreless
Baud Rate 9,600 [bps] ~ 4.5 [Mbps]
Control Algorithm PID control
Resolution 4096 [pulse/rev]
Operating Modes Velcoity Control Mode
Position Control Mode (0 ~ 360 [°])
Extended Position Control Mode (Multi-turn)
PWM Control Mode (Voltage Control Mode)
Weight 65 [g]
Dimensions (W x H x D) 28.5 x 46.5 x 34 [mm]
Gear Ratio 245.22 : 1
Stall Torque 1.4 [N.m] (at 9.0 [V], 1.1 [A])
1.7 [N.m] (at 11.1 [V], 1.3 [A])
1.9 [N.m] (at 12.0 [V], 1.4 [A])
No Load Speed 52 [rev/min] (at 9.0 [V])
65 [rev/min] (at 11.1 [V])
70 [rev/min] (at 12.0 [V])
Operating Temperature -5 ~ +80 [°C]
Input Voltage 6.5 ~ 14.8 [V] (Recommended : 12.0 [V])
Command Signal Digital Packet
Protocol Type Half Duplex Asynchronous Serial Communication
(8bit, 1stop, No Parity)
Physical Connection TTL Level Multidrop Bus
ID 253 ID (0 ~ 252)
Feedback Position, Velocity, Load, Realtime tick, Trajectory, Temperature, Input Voltage, etc
Part Material Full Metal Gear
Engineering Plastic (Body)
Standby Current 46 [mA]


DANGER
(May cause serious injury or death)

  • Never place items containing water, flammables, and solvents near product.
  • Never place fingers, arms, toes, and other body parts near product during operation.
  • Cut power off if product emits strange odors or smoke.
  • Keep product out of reach of children.
  • Check the power’s polarity before wiring.


CAUTION
(May cause injury or damage to product)

  • Do not operate the product at a temperature exceeding -5 ~ +80 [°C] range.
  • Do not insert sharp blades nor pins during product operation.


ATTENTION
(May cause injury or damage to product)

  • Do not disassemble or modify product.
  • Do not drop or apply strong shock to product.

Performance Graph

NOTE : The Max Torque and the Stall Torque of Performance Graph are different in measurement methods. Stall torque is a measured value of the momentary torque that it can reach. This is generally how RC servos are measured. The Performance graph is also called as N-T curves, which is measured with the gradually increasing load. The actual motor operation environment is closer to the performance graph, not stall torque method. For this reason, the performance graph is broadly used in the industrial field. Generally, Max Torque of the Performance Graph is less than the Stall Torque.

CAUTION : When supplying power

  • It is recommended using ROBOTIS controller or SMPS2DYNAMIXEL.
  • Do not connect or disconnect DYNAMIXEL when power is being supplied.

Control Table

The Control Table is a structure of data implemented in the device. Users can read a specific Data to get status of the device with Read Instruction Packets, and modify Data as well to control the device with WRITE Instruction Packets.

Control Table, Data, Address

The Control Table is a structure that consists of multiple Data fields to store status or to control the device. Users can check current status of the device by reading a specific Data from the Control Table with Read Instruction Packets. WRITE Instruction Packets enable users to control the device by changing specific Data in the Control Table. The Address is a unique value when accessing a specific Data in the Control Table with Instruction Packets. In order to read or write data, users must designate a specific Address in the Instruction Packet. Please refer to Protocol 2.0 for more details about Instruction Packets.

NOTE : Two’s complement is applied for the negative value. For more information, please refer to Two’s complement from Wikipedia.

Area (EEPROM, RAM)

The Control Table is divided into 2 Areas. Data in the RAM Area is reset to initial values when the power is reset(Volatile). On the other hand, data in the EEPROM Area is maintained even when the device is powered off(Non-Volatile).

Data in the EEPROM Area can only be written to if Torque Enable(64) is cleared to ‘0’(Off).

Size

The Size of data varies from 1 ~ 4 bytes depend on their usage. Please check the size of data when updating the data with an Instruction Packet. For data larger than 2 bytes will be saved according to Little Endian.

Access

The Control Table has two different access properties. ‘RW’ property stands for read and write access permission while ‘R’ stands for read only access permission. Data with the read only property cannot be changed by the WRITE Instruction. Read only property(‘R’) is generally used for measuring and monitoring purpose, and read write property(‘RW’) is used for controlling device.

Initial Value

Each data in the Control Table is restored to initial values when the device is turned on. Default values in the EEPROM area are initial values of the device (factory default settings). If any values in the EEPROM area are modified by a user, modified values will be restored as initial values when the device is turned on. Initial Values in the RAM area are restored when the device is turned on.

Control Table of EEPROM Area

Address Size
(Byte)
Data Name Access Default
Value
Range Unit
0 2 Model Number R 1,080 - -
2 4 Model Information R - - -
6 1 Firmware Version R - - -
7 1 ID RW 1 0 ~ 252 -
8 1 Baud Rate RW 1 0 ~ 7 -
9 1 Return Delay Time RW 250 0 ~ 254 2 [μsec]
10 1 Drive Mode RW 0 0 ~ 5 -
11 1 Operating Mode RW 3 0 ~ 16 -
12 1 Secondary(Shadow) ID RW 255 0 ~ 252 -
13 1 Protocol Type RW 2 1 ~ 2 -
20 4 Homing Offset RW 0 -1,044,479 ~
1,044,479
1 [pulse]
24 4 Moving Threshold RW 10 0 ~ 1,023 0.229 [rev/min]
31 1 Temperature Limit RW 80 0 ~ 100 1 [°C]
32 2 Max Voltage Limit RW 160 60 ~ 160 0.1 [V]
34 2 Min Voltage Limit RW 60 60 ~ 160 0.1 [V]
36 2 PWM Limit RW 885 0 ~ 885 0.113 [%]
44 4 Velocity Limit RW 306 0 ~ 1,023 0.229 [rev/min]
48 4 Max Position Limit RW 4,095 0 ~ 4,095 1 [pulse]
52 4 Min Position Limit RW 0 0 ~ 4,095 1 [pulse]
63 1 Shutdown RW 52 - -

Control Table of RAM Area

Address Size
(Byte)
Data Name Access Default
Value
Range Unit
64 1 Torque Enable RW 0 0 ~ 1 -
65 1 LED RW 0 0 ~ 1 -
68 1 Status Return Level RW 2 0 ~ 2 -
69 1 Registered Instruction R 0 0 ~ 1 -
70 1 Hardware Error Status R 0 - -
76 2 Velocity I Gain RW 1,920 0 ~ 16,383 -
78 2 Velocity P Gain RW 100 0 ~ 16,383 -
80 2 Position D Gain RW 0 0 ~ 16,383 -
82 2 Position I Gain RW 0 0 ~ 16,383 -
84 2 Position P Gain RW 700 0 ~ 16,383 -
88 2 Feedforward 2nd Gain RW 0 0 ~ 16,383 -
90 2 Feedforward 1st Gain RW 0 0 ~ 16,383 -
98 1 Bus Watchdog RW 0 1 ~ 127 20 [msec]
100 2 Goal PWM RW - -PWM Limit(36) ~
PWM Limit(36)
-
104 4 Goal Velocity RW - -Velocity Limit(44) ~
Velocity Limit(44)
0.229 [rev/min]
108 4 Profile Acceleration RW 0 0 ~ 32,767
0 ~ 32,737
214.577 [rev/min2]
1 [ms]
112 4 Profile Velocity RW 0 0 ~ 32,767 0.229 [rev/min]
116 4 Goal Position RW - Min Position Limit(52) ~
Max Position Limit(48)
1 [pulse]
120 2 Realtime Tick R - 0 ~ 32,767 1 [msec]
122 1 Moving R 0 0 ~ 1 -
123 1 Moving Status R 0 - -
124 2 Present PWM R - - -
126 2 Present Load R - -1,000 ~ 1,000 0.1 [%]
128 4 Present Velocity R - - 0.229 [rev/min]
132 4 Present Position R - - 1 [pulse]
136 4 Velocity Trajectory R - - 0.229 [rev/min]
140 4 Position Trajectory R - - 1 [pulse]
144 2 Present Input Voltage R - - 0.1 [V]
146 1 Present Temperature R - - 1 [°C]
168 2 Indirect Address 1 RW 224 64 ~ 661 -
170 2 Indirect Address 2 RW 225 64 ~ 661 -
172 2 Indirect Address 3 RW 226 64 ~ 661 -
- -
218 2 Indirect Address 26 RW 249 64 ~ 661 -
220 2 Indirect Address 27 RW 250 64 ~ 661 -
222 2 Indirect Address 28 RW 251 64 ~ 661 -
224 1 Indirect Data 1 RW 0 0 ~ 255 -
225 1 Indirect Data 2 RW 0 0 ~ 255 -
226 1 Indirect Data 3 RW 0 0 ~ 255 -
- -
249 1 Indirect Data 26 RW 0 0 ~ 255 -
250 1 Indirect Data 27 RW 0 0 ~ 255 -
251 1 Indirect Data 28 RW 0 0 ~ 255 -
578 2 Indirect Address 29 RW 634 64 ~ 661 -
580 2 Indirect Address 30 RW 635 64 ~ 661 -
582 2 Indirect Address 31 RW 636 64 ~ 661 -
- -
628 2 Indirect Address 54 RW 659 64 ~ 661 -
630 2 Indirect Address 55 RW 660 64 ~ 661 -
632 2 Indirect Address 56 RW 661 64 ~ 661 -
634 1 Indirect Data 29 RW 0 0 ~ 255 -
635 1 Indirect Data 30 RW 0 0 ~ 255 -
636 1 Indirect Data 31 RW 0 0 ~ 255 -
- -
659 1 Indirect Data 54 RW 0 0 ~ 255 -
660 1 Indirect Data 55 RW 0 0 ~ 255 -
661 1 Indirect Data 56 RW 0 0 ~ 255 -

CAUTION : Protocol 1.0 does not support addresses greater than 256. Therefore, Indirect Address 29 ~ 56 and Indirect Data 29 ~ 56 can only be accessed with Protocol 2.0.

Control Table Description

CAUTION : Data in the EEPROM Area can only be written when the value of Torque Enable(64) is cleared to ‘0’.

Model Number(0)

This address stores model number of DYNAMIXEL.

Firmware Version(6)

This address stores firmware version of DYNAMIXEL.

ID(7)

The ID is a unique value in the network to identify each DYNAMIXEL with an Instruction Packet. 0~252 (0xFC) values can be used as an ID, and 254(0xFE) is occupied as a broadcast ID. The Broadcast ID(254, 0xFE) can send an Instruction Packet to all connected DYNAMIXEL simultaneously.

NOTE : Please avoid using an identical ID for multiple DYNAMIXEL. You may face communication failure or may not be able to detect DYNAMIXEL with an identical ID.

NOTE : If the Instruction Packet ID is set to the Broadcast ID(0xFE), Status Packets will not be returned for READ and WRITE Instructions. For more details, please refer to the Status Packet section for Protocol 1.0 or Protocol 2.0.

Baud Rate(8)

The Baud Rate(8) determines serial communication speed between a controller and DYNAMIXEL.

Value Baud Rate Margin of Error
7 4.5M [bps] 0.000 [%]
6 4M [bps] 0.000 [%]
5 3M [bps] 0.000 [%]
3 1M [bps] 0.000 [%]
4 2M [bps] 0.000 [%]
2 115,200 [bps] 0.000 [%]
1(Default) 57,600 [bps] 0.000 [%]
0 9,600 [bps] 0.000 [%]

NOTE : Less than 3% of the baud rate error margin will not affect to UART communication.

NOTE : For the stable communication with higher Baudrate, configure USB Latency value to the lower.
USB Latency Setting

Return Delay Time(9)

After the DYNAMIXEL receives an Instruction Packet, it delays transmitting the Status Packet for Return Delay Time(9). For instance, if the Return Delay Time(9) is set to ‘10’, the Status Packet will be returned after 20[μsec] when the Instruction Packet is received.

Unit Value Range Description
2[μsec] 0 ~ 254 Default value ‘250’(500[μsec]), Maximum 508[μsec]

Drive Mode(10)

The Drive Mode(10) configures Drive Mode of DYNAMIXEL.

Bit Item Description
Bit 7(0x80) - Unused, always ‘0’
Bit 6(0x40) - Unused, always ‘0’
Bit 5(0x20) - Unused, always ‘0’
Bit 4(0x10) - Unused, always ‘0’
Bit 3(0x08) - Unused, always ‘0’
Bit 2(0x04) Profile Configuration [0] Velocity-based Profile: Create a Profile based on Velocity
[1] Time-based Profile: Create Profile based on time
※ See What is the Profile
Bit 1(0x02) - Unused, always ‘0’
Bit 0(0x01) Normal/Reverse Mode [0] Normal Mode: CCW(Positive), CW(Negative)
[1] Reverse Mode: CCW(Negative), CW(Positive)

NOTE : Time-based Profile is available from firmware V42.

NOTE : If the value of Bit 0(Normal/Reverse Mode) of the Drive Mode(10) is set to 1, rotational direction is inverted.
Thus, Goal Position, Present Position will have a inverted direction.
This feature can be very useful when configuring symmetrical joint or wheel system.

Operating Mode(11)

Value Operating Mode Description
1 Velocity Control Mode
(0° ~ 360°)
This mode controls velocity and ideal for wheel operation.
This mode is identical to the Wheel Mode(endless) from existing DYNAMIXEL.
3(Default) Position Control Mode This mode controls position and identical to the Joint Mode.
Operating position range is limited by Max Position Limit(48) and Min Position Limit(52).
This mode is ideal for articulated robots that each joint rotates less than 360°.
4 Extended Position Control Mode
(Multi-turn)
This mode controls position and identical to Multi-turn Mode.
512 turns are supported(-256[rev] ~ 256[rev]) and ideal for multi-turn wrists or conveyer systems or a system that requires an additional reduction gear.
16 PWM Control Mode
(Voltage Control Mode)
This mode directly controls PWM output (Voltage Control Mode)

NOTE : Switching Operating Mode will reset gains(PID, Feedfoward) properly to the selected Operating Mode. The profile generator and limits will also be reset.

  1. Profile Velocity(112), Profile Acceleration(108) : Reset to ‘0’
  2. Goal PWM(100) : Reset to PWM Limit(36)

NOTE : PWM is the abbreviation for Pulse Width Modulation that modulates PWM Duty to control motors.
It changes pulse width to control average supply voltage to the motor and this technique is widely used in the motor control field.

  1. PWM Control Mode is similar to the Wheel Mode of DYNAMIXEL AX and RX series.
  2. Use Goal PWM(100) on PWM Control Mode in order to control supply voltage for DYNAMIXEL.

NOTE : Present Position(132) represents 4 byte continuous range from -2,147,483,648 to 2,147,483,647 when Torque is turned off regardless of Operating Mode(11).
However, Present Position(132) will be reset to an absolute position value within one full rotation in following cases:

  1. When Operating Mode(11) switches to Position Control Mode, Present Position(132) will be reset to an absolute position value within a full rotation.
  2. When torque is turned on in Position Control Mode, Present Position(132) will be reset to an absolute position value within one full rotation.
  3. Turning on the power supply or using Reboot Instruction.

Notice that Present Position(132) value can be affected by Homing Offset(20) .

Secondary(Shadow) ID(12)

The Secondary(Shadow) ID(12) assigns a secondary ID to the DYNAMIXEL.
The Secondary ID(12) can be shared to group between DYNAMIXELs and to synchronize their movement, unlike ID(7) which should not be overlapped. Be aware of differences between the Secondary ID(12) and ID(7) by reading the following.

Values Description
0 ~ 252 Activate Secondary ID function
253 ~ 255 Deactivate Secondary ID function, Default value ‘255’

Secondary ID(12) Example

See the following Secondary ID(12) example to understand properly. Note that sample DYNAMAIXELs at the following example use a different ID (1 to 5).

  1. Set Secondary ID of all DYNAMIXELs to ‘5’.
  2. Send Write Instruction Packet(ID(7) = 1, LED(65) = 1).
  3. The DYNAMIXEL with ID ‘1’ turns on its LED by the Instruction Packet, and Status Packet will be returned.
  4. Send Write Instruction Packet(ID(7) = 5, LED(65) = 1).
  5. All DYNAMIXELs turns on their LED, but Status Packet of ID ‘5’ will be returned only.
  6. Set the Secondary ID of all DYNAMIXELs to ‘100’.
  7. Send Write Instruction Packet(ID(7) = 100, LED(65) = 0).
  8. All DYNAMIXELs turns off their LED. As no DYNAMIXEL uses ID 100, but uses the same Secondary ID, the Status Packet will not be returned.

Protocol Type(13)

Users can select DYNAMIXEL protocol type (1.0 and 2.0).
Even if Protocol 1.0 is selected, Protocol 2.0 Control Table will be used.
It is recommended to use an identical protocol type for multiple DYNAMIXEL.

Value Protocol Type Compatible DYNAMIXEL
1 1.0 AX Series, DX Series, RX Series, EX Series, MX Series with Firmware below v39
2(default) 2.0 MX-28/64/106 with Firmware v39 or above, X Series, PRO Series

WARNING : To change the Protocol 2.0 to Protocol 1.0, use the DYNAMIXEL Wizard 2.0 as R+ Manager 2.0 is not compatible with the Protocol 1.0 products.

NOTE : The protocol 2.0 is greatly enhanced from the protocol 1.0. Accessing some of the Control Table area might be denied if protocol 1.0 is selected. This manual complies with protocol 2.0. Please refer to the Protocol 1.0 and Protocol 2.0 of e-Manual for more details about the protocol.

NOTE : Please refer to the Protocol Compatibility table for product.

Homing Offset(20)

The Home Offset(20) adjusts the home position. The offest value is added to the Present Position(132).

Present Position(132) = Actual Position + Homing Offset(20)

Unit Value Range Description
about 0.088 [°] -1,044,479 ~ 1,044,479
(-255 ~ 255[rev])
4,096 resolution

NOTE : In case of the Position Control Mode(Joint Mode) that rotates less than 360 degrees, any invalid Homing Offset(20) values will be ignored(valid range : -1,024 ~ 1,024).

NOTE : In the case of Reverse Mode bit is set in Drive Mode(10), the sign of Homing Offset(20) value will not be reversed.

Moving Threshold(24)

The Moving Threshold(24) determines whether the DYNAMIXEL is in motion or not.
When the absolute value of Present Velocity(128) is greater than the Moving Threshold(24), Moving(122) is set to ‘1’. Otherwise it is cleared to ‘0’.

  Values Description
Unit about 0.229 rpm All velocity related Data uses the same unit
Range 0 ~ 1,023 -

Temperature Limit(31)

The Temperature Limit(31) limits operating temperature of the DYNAMIXEL.
When the Present Temperature(146) is greater than the Temperature Limit(31), the Over Heating Error Bit(0x04) and Hardware Error Bit(0x80) in the Hardware Error Status(70) will be set. If Overheating Error Bit(0x04) is configured in the Shutdown(63), Torque Enable(64) is cleared to ‘0’ and DYNAMIXEL’s torque will be disabled.
See the Shutdown(63) for more detailed information.

Unit Value Range Description
About 1° 0 ~ 100 0 ~ 100°

CAUTION : Do not set this value higher than its default. In case that DYNAMIXEL encounters temperature warning alarm (Overheating Error Bit(0x04)), let it cool for 20 minutes or more. Otherwise, it may cause severe damage in operating.

Min/Max Voltage Limit(32, 34)

These values are maximum and minimum operating voltages.
When current input voltage acquired from Present Input Voltage(144) exceeds the range of Max Voltage Limit(32) and Min Voltage Limit(34), Voltage Range Error Bit(0x01) and Hardware Error Bit(0x80) in the Hardware Error Status(70) are set.
If Input Voltage Error Bit(0x10) is configured in the Shutdown(63), Torque Enable(64) is cleared to ‘0’ and Torque is disabled.
For more details, please refer to the Shutdown(63) section.

Unit Value Range Description
About 0.1 [V] 60 ~ 160 6.0 ~ 16.0 [V]

PWM Limit(36)

The PWM Limit(36) indicates maximum PWM output. Goal PWM(100) can’t be configured with any values exceeding PWM Limit(36). PWM Limit(36) is commonly used in all operating mode as an output limit, therefore decreasing PWM output will result in decreasing torque and velocity. For more details, please refer to the Gain section of each operating modes.

Values Description
0(0 [%]) ~ 885(100 [%]) 885 = 100 [%] output

Velocity Limit(44)

Velocity Limit(44) indicates the maximum value of Goal Velocity(104). For more details, see Goal Velocity(104).

Unit Value Range
0.229rpm 0 ~ 1,023

NOTE: The default value of Velocity Limit(44) has been decreased since Firmware V42.

Min/Max Position Limit(48, 52)

The Min and Max Position Limit(48, 52) limit maximum and minimum desired positions for Position Control Mode(Joint Mode) within the range of 1 rotation(0 ~ 4,095).
Therefore, Goal Position(116) should be configured within the position limit range.
These values are not used in Extended Position Control Mode.

Unit Value Range
0.088 [°] 0 ~ 4,095(1 rotation)

NOTE : Max Position Limit(48) and Min Position Limit(52) are only used in Position Control Mode with a single turn.

Shutdown(63)

The DYNAMIXEL can protect itself by detecting dangerous situations that could occur during the operation.
Each Bit is inclusively processed with the ‘OR’ logic, therefore, multiple options can be generated.
For instance, when ‘0x05’ (binary : 00000101) is defined in Shutdown(63), DYNAMIXEL can detect both Input Voltage Error(binary : 00000001) and Overheating Error(binary : 00000100).
If those errors are detected, Torque Enable(64) is cleared to ‘0’ and the motor output becomes 0 [%].
REBOOT is the only method to reset Torque Enable(64) to ‘1’(Torque ON) after the shutdown.
Check Hardware Error Bit(0x80) in a error field of Status Packet or a present status via Hardware Error Status(70) . The followings are detectable situations.

Bit Item Description
Bit 7 - Unused, Always ‘0’
Bit 6 - Unused, Always ‘0’
Bit 5 Overload Error(default) Detect persistent load that exceeds maximum output
Bit 4 Electrical Shock Error(default) Detect electric shock on the circuit or insufficient power to operate the motor
Bit 3 Motor Encoder Error Detect malfunction of the motor encoder
Bit 2 OverHeating Error(default) Detect internal temperature exceeds the configured operating temperature
Bit 1 - Unused, Always ‘0’
Bit 0 Input Voltage Error Detect input voltage exceeds the configured operating voltage

NOTE :

  1. If Shutdown occurs, LED will flicker every second. (Firmware v41 or above)
  2. If Shutdown occurs, reboot the device.
    • H/W REBOOT : Turn off and turn on the power again
    • S/W REBOOT : Transmit REBOOT Instruction (For more details, refer to the Reboot section of e-Manual.)

Torque Enable(64)

Torque Enable(64) determines Torque ON/OFF. Writing ‘1’ to Toque Enable’s address will turn on the Torque and all Data in the EEPROM area will be locked.

Value Description
0(Default) Turn off the torque
1 Turn on the torque and lock EEPROM area

NOTE : Present Position(132) can be reset when Operating Mode(11) and Torque Enable(64) are updated. For more details, please refer to the Homing Offset(20) and Present Position(132).

LED(65)

The LED(65) determines LED On or Off.

Bit Description
0(Default) Turn OFF the LED
1 Turn ON the LED

NOTE : Check the status of DYNAMIXEL by the counts of flickering LED.

Status LED Representation
Booting LED flickers once
Factory Reset LED flickers 4 times
Alarm LED flickers
Boot Mode LED On

Status Return Level(68)

The Status Return Level(68) decides how to return Status Packet when DYNAMIXEL receives an Instruction Packet.

Value Responding Instructions Description
0 PING Instruction Returns PING Instuction only
1 PING Instruction
READ Instruction
Returns PING and READ Instuctions only
2 All Instructions Returns all Instructions

NOTE : If the Instruction Packet ID is set to the Broadcast ID(0xFE), Status Packet will not be returned for READ and WRITE Instructions regardless of Status Return Level. For more details, please refer to the Status Packet section for Protocol 1.0 or Protocol 2.0.

1 Packet ID is the field that indicates an ID of the device that should receive the Instruction Packet and process it.

Registered Instruction(69)

Value Description
0 REG_WRITE instruction is not received
1 REG_WRITE instruction is received

NOTE : If ACTION instruction is executed, the value will be changed to 0.

Hardware Error Status(70)

The Hardware Error Status(70) indicates hardware error status.
The DYNAMIXEL can protect itself by detecting dangerous situations that could occur during the operation.
Each Bit is inclusively processed with the ‘OR’ logic, therefore, multiple options can be generated.
For instance, when ‘0x05’ (binary : 00000101) is defined in Shutdown(63), DYNAMIXEL can detect both Input Voltage Error(binary : 00000001) and Overheating Error(binary : 00000100).
If those errors are detected, Torque Enable(64) is cleared to ‘0’ and the motor output becomes 0 [%].
REBOOT is the only method to reset Torque Enable(64) to ‘1’(Torque ON) after the shutdown.
Check Hardware Error Bit(0x80) in a error field of Status Packet or a present status via Hardware Error Status(70) . The followings are detectable situations.

Bit Item Description
Bit 7 - Unused, Always ‘0’
Bit 6 - Unused, Always ‘0’
Bit 5 Overload Error(default) Detect persistent load that exceeds maximum output
Bit 4 Electrical Shock Error(default) Detect electric shock on the circuit or insufficient power to operate the motor
Bit 3 Motor Encoder Error Detect malfunction of the motor encoder
Bit 2 OverHeating Error(default) Detect internal temperature exceeds the configured operating temperature
Bit 1 - Unused, Always ‘0’
Bit 0 Input Voltage Error Detect input voltage exceeds the configured operating voltage

NOTE :

  1. If Shutdown occurs, LED will flicker every second. (Firmware v41 or above)
  2. If Shutdown occurs, reboot the device.
    • H/W REBOOT : Turn off and turn on the power again
    • S/W REBOOT : Transmit REBOOT Instruction (For more details, refer to the Reboot section of e-Manual.)

Velocity PI Gain(76, 78)

The Velocity PI Gains(76, 78) indicate gains of Velocity Control Mode.
Gains of DYNAMIXEL’s internal controller can be calculated from Gains of the Control Table as shown below.
The constant in each equations include sampling time.
Velocity P Gain of DYNAMIXEL’s internal controller is abbreviated to KVP and that of the Control Table is abbreviated to KVP(TBL).

  Controller Gain Conversion Equations Range Description
Velocity I Gain(76) KVI KVI = KVI(TBL) / 65,536 0 ~ 16,383 I Gain
Velocity P Gain(78) KVP KVP = KVP(TBL) / 128 0 ~ 16,383 P Gain

Below figure is a block diagram describing the velocity controller in Velocity Control Mode. When the instruction transmitted from the user is received by DYNAMIXEL, it takes following steps until driving the horn.

  1. An Instruction from the user is transmitted via DYNAMIXEL bus, then registered to Goal Velocity(104).
  2. Goal Velocity(104) is converted to desired velocity trajectory by Profile Acceleration(108).
  3. The desired velocity trajectory is stored at Velocity Trajectory(136).
  4. PI controller calculates PWM output for the motor based on the desired velocity trajectory.
  5. Goal PWM(100) sets a limit on the calculated PWM output and decides the final PWM value.
  6. The final PWM value is applied to the motor through an Inverter, and the horn of DYNAMIXEL is driven.
  7. Results are stored at Present Position(132), Present Velocity(128), Present PWM(124) and Present Load(126).

NOTE : Ka stands for Anti-windup Gain and β is a conversion coefficient of position and velocity that cannot be modified by users. For more details about the PID controller, please refer to the PID Controller at wikipedia.

Position PID Gain(80, 82, 84), Feedforward 1st/2nd Gains(88, 90)

These Gains are used in Position Control Mode and Extended Position Control Mode. Gains of DYNAMIXEL’s internal controller can be calculated from Gains of the Control Table as shown below. The constant in each equations includes sampling time. Position P Gain of DYNAMIXEL’s internal controller is abbreviated to KPP and that of the Control Table is abbreviated to KPP(TBL).

  Controller Gain Conversion Equations Range Description
Position D Gain(80) KPD KPD = KPD(TBL) / 16 0 ~ 16,383 D Gain
Position I Gain(82) KPI KPI = KPI(TBL) / 65,536 0 ~ 16,383 I Gain
Position P Gain(84) KPP KPP = KPP(TBL) / 128 0 ~ 16,383 P Gain
Feedforward 2nd Gain(88) KFF2nd KFF2nd(TBL) / 4 0 ~ 16,383 Feedforward Acceleration Gain
Feedforward 1st Gain(90) KFF1st KFF1st(TBL) / 4 0 ~ 16,383 Feedforward Velocity Gain

Below figure is a block diagram describing the position controller in Position Control Mode and Extended Position Control Mode. When the instruction from the user is received by DYNAMIXEL, it takes following steps until driving the horn.

  1. An Instruction from the user is transmitted via DYNAMIXEL bus, then registered to Goal Position(116).
  2. Goal Position(116) is converted to desired position trajectory and desired velocity trajectory by Profile Velocity(112) and Profile Acceleration(108).
  3. The desired position trajectory and desired velocity trajectory is stored at Position Trajectory(140) and Velocity Trajectory(136) respectively.
  4. Feedforward and PID controller calculate PWM output for the motor based on desired trajectories.
  5. Goal PWM(100) sets a limit on the calculated PWM output and decides the final PWM value.
  6. The final PWM value is applied to the motor through an Inverter, and the horn of DYNAMIXEL is driven.
  7. Results are stored at Present Position(132), Present Velocity(128), Present PWM(124) and Present Load(126).

NOTE:

  • In case of PWM Control Mode, both PID controller and Feedforward controller are deactivated while Goal PWM(100) value is directly controlling the motor through an inverter. In this manner, users can directly control the supplying voltage to the motor.
  • Ka is an Anti-windup Gain that cannot be modified by users.
    For more details about the PID controller and Feedforward controller, please refer to the PID Controller and Feed Forward.

Bus Watchdog(98)

The Bus Watchdog(98) is a safety device (Fail-safe) to stops the DYNAMIXEL if the communication between the controller and DYNAMIXEL communication (RS485, TTL) is disconnected due to an unspecified error. The communication is defined as all the Instruction Packet in the DYNAMIXEL Protocol.

  Values Description
Unit 20[ms] -
Range 0 Deactivate Bus Watchdog Function, Clear Bus Watchdog Error
Range 1 ~ 127 Activate Bus Watchdog
Range -1 Bus Watchdog Error Status

The Bus Watchdog function monitors the communication interval (time) between the controller and DYNAMIXEL when Torque Enable(64) is ‘1’. If the measured communication interval (time) is larger than Bus Watchdog(98), the DYNAMIXEL will stop. Bus Watchdog(98) will be changed to ‘-1’ (Bus Watchdog Error). If the Bus Watchdog Error screen appears, the Goal Value (Goal PWM(100), Goal Velocity(104), Goal Position(116)) will be changed to read-only-access. Therefore, when a new value is written to the Goal Value, a Range Error will be returned via the Status packet. If the value of Bus Watchdog(98) is changed to ‘0’, Bus Watchdog Error will be cleared.

NOTE : For details of Range Error, please refer to the Protocol 2.0

NOTE: Bus Watchdog (98) is available from firmware v38.

Bus Watchdog (98) Example

The following is the example of the operation of the Bus Watchdog function.

  1. After setting the Operating Mode(11) to speed control mode, change the Torque Enable(64) to ‘1’.
  2. If ‘50’ is written in the Goal Velocity(104), the DYNAMIXEL will rotate in CCW direction.
  3. Change the value of Bus Watchdog(98) to ‘100’ (2,000 [ms]). (Activate Bus Watchdog Function)
  4. If no instruction packet is received for 2,000 [ms], the DYNAMIXEL will stop. When it stops, the Profile Acceleration(108) and Profile Velocity(112) are applied as ‘0’.
  5. The value of Bus Watchdog(98) changes to ‘-1’ (Bus Watchdog Error). At this time, the access to the Goal Value will be changed to read-only.
  6. If ‘150’ is written to the Goal Velocity(104), Range Error will be returned via Status Packet.
  7. If the value of Bus Watchdog(98) is changed to ‘0’, Bus Watchdog Error will be cleared.
  8. If “150” is written in the Goal Velocity(104), the DYNAMIXEL will rotate in CCW direction.

Goal PWM(100)

When the Operating Mode(11) is PWM Control Mode, both the PID and Feedforward controllers will be deactivated as the Goal PWM(100) value directly controls a motor via an inverter. But on the other Operating Mode(11), the Goal PWM(100) limits PWM value only. Read Position PID Gain(80, 82, 84), Feedforward 1st/2nd Gains(88, 90) or Velocity PI Gain(76, 78) for how Goal PWM (100) works with the gains.

Range Description
-PWM Limit(36) ~ PWM Limit(36) Initial Value of PWM Limit(36) : ‘885’

NOTE: Goal PWM(100) can not exceed PWM Limit(36).

Goal Velocity(104)

Use the Goal Velocity(104) to set a desired velocity when the Operating Mode(11) is Velocity Control Mode.

Be aware that the Goal Velocity(104) is not to limit moving velocity.

Unit Value Range
0.229 rpm -Velocity Limit(44) ~ Velocity Limit(44)

NOTE: This value cannot exceed Velocity Limit(44).

NOTE : The maximum velocity and maximum torque of DYNAMIXEL is affected by supplying voltage.
Therefore, if supplying voltage changes, so does the maximum velocity. This manual complies with recommended supply voltage(12[V]).

NOTE : If Profile Acceleration(108) and Goal Velocity(104) are modified simultaneously, modified Profile Acceleration(108) will be used to process Goal Velocity(104).

Profile Acceleration(108)

When the Drive Mode(10) is Velocity-based Profile, Profile Acceleration(108) sets acceleration of the Profile.
When the Drive Mode(10) is Time-based Profile, Profile Acceleration(108) sets accelerating time of the Profile.
Be aware that the Profile Acceleration(108) is to be applied in all control mode except Current Control Mode or PWM Control Mode on the Operating Mode(11).

For more detailed information, see [What is the Profile](#what-is-the-profile.

Velocity-based Profile Values Description
Unit 214.577 [rev/min2] Sets acceleration of the Profile
Range 0 ~ 32767 ‘0’ stands for an infinite acceleration
Time-based Profile Values Description
Unit 1 [msec] Sets accelerating time of the Profile
Range 0 ~ 32737 ‘0’ stands for an infinite accelerating time(‘0 [msec]’).
Profile Acceleration(108) will not exceed 50% of Profile Velocity(112) value.

NOTE : Time-based Profile is available from the firmware version 42.

Profile Velocity(112)

When the Drive Mode(10) is Velocity-based Profile, Profile Velocity(112) sets the maximum velocity of the Profile.
When the Drive Mode(10) is Time-based Profile, Profile Velocity(112) sets the time span for the Profile.
Be aware that the Profile Velocity(112) is to be only applied to Position Control Mode or Extended Position Control Mode on the Operating Mode(11).

For more detailed information, see What is the Profile.

NOTE: Velocity Control Mode only uses Profile Acceleration(108) without the Profile Velocity(112).

Velocity-based Profile Values Description
Unit 0.229 [rev/min] Sets velocity of the Profile
Range 0 ~ 32767 ‘0’ stands for an infinite velocity
Time-based Profile Values Description
Unit 1 [msec] Sets the time span for the Profile
Range 0 ~ 32737 ‘0’ stands for an infinite velocity.
Profile Acceleration(108) will not exceed 50% of Profile Velocity(112) value.

NOTE : Time-based Profile is available from the firmware V42.

Goal Position(116)

The Goal Position(116) sets desired position. From the front view of DYNAMIXEL, CCW is an increasing direction, whereas CW is a decreasing direction. The way to reaching the Goal Position(116) differs by 4 Profiles provided by DYNAMIXEL. See the What is the Profile for more details.

Mode Values Description
Position Control Mode Min Position Limit(52) ~ Max Position Limit(48) Initial Value : 0 ~ 4,095
Extended Position Control Mode -1,048,575 ~ 1,048,575 -256[rev] ~ 256[rev]
Degree Conversion Constant Description
0.088°/Value 1[rev] : 0 ~ 4,095

NOTE : The Profile Velocity(112) and the Profile Acceleration(108) are applied in below cases.

NOTE : When turning off the power supply or changing Operation Mode on Extended Position Control Mode, the value of Present Position is reset to the absolute position value of single turn .

NOTE : Present Position(132) represents 4 byte continuous range from -2,147,483,648 to 2,147,483,647 when Torque is turned off regardless of Operating Mode(11).
However, Present Position(132) will be reset to an absolute position value within one full rotation in following cases:

  1. When Operating Mode(11) switches to Position Control Mode, Present Position(132) will be reset to an absolute position value within a full rotation.
  2. When torque is turned on in Position Control Mode, Present Position(132) will be reset to an absolute position value within one full rotation.
  3. Turning on the power supply or using Reboot Instruction.

Notice that Present Position(132) value can be affected by Homing Offset(20) .

Realtime Tick(120)

The Realtime Tick(120) indicates DYNAMIXEL’s time.

Unit Value Range Description
1 ms 0 ~ 32,767 The value resets to ‘0’ when it exceeds 32,767

Moving(122)

The Moving(122) indicates whether DYNAMIXEL is in motion or not.
If absolute value of Present Velocity(128) is greater than Moving Threshold(24), Moving(122) is set to ‘1’.
Otherwise, it will be cleared to ‘0’.
However,the Moving(122) will always be set to ‘1’ regardless of Present Velocity(128) while Profile is in progress with Goal Position(116) instruction.

Value Description
0 Movement is not detected
1 Movement is detected, or Profile is in progress(Goal Position(116) instruction is being processed)

Moving Status(123)

The Moving Status(123), one byte data, provides additional information about the movement.
Following Error(0x08) and In-Position(0x01) are available under Position Control Mode, Extended Position Control Mode.

For more details about the mode, see the Operating Mode(11).

Bit Value Information Description
Bit 7 X - Reserved
Bit 6 X - Reserved
Bit 4
Bit 5
11
10
01
00
Velocity Profile 11 : Trapezoidal Profile
10 : Triangular Profile
01 : Rectangular Profile
00 : Profile not used(Step)
Bit 3 0 or 1 Following Error DYNAMIXEL is following the desired position trajectory
0 : Following
1 : Not following
Bit 2 X - Reserved
Bit 1 0 or 1 Profile Ongoing Profile is in progress with Goal Position(116) instruction
0 : Not in progress
1 : In progress
Bit 0 0 or 1 In-Position DYNAMIXEL has arrived to the desired position
0 : Not arrived
1 : Arrived

NOTE : The Triangular velocity profile is configured when Rectangular velocity profile cannot reach to the Profile Velocity(112).

NOTE : In-Position bit will be set when the positional deviation is smaller than a predefined value under Position related control modes.

Present PWM(124)

This value indicates present PWM. For more details, please refer to the Goal PWM(100).

Present Load(126)

It means currently applied load. For example, the value is 512, it means the load is detected in the direction of CCW about 50% of the maximum torque.

Unit Value Range Description
0.1% -1,000 ~ 1,000 Positive(CCW Load), Negative(CW Load)

NOTE : The Present load is an inferred value based on the internal output value; not a measured value using torque sensor, etc. Therefore, it may be inaccurate for measuring weight or torque. It is recommended to use it for predicting the direction and size of the force being applied to the joint.

Present Velocity(128)

This value indicates present Velocity. For more details, please refer to the Goal Velocity(104).

Present Position(132)

The Present Position(132) indicates present Position. For more details, see the Goal Position(116).

NOTE : Present Position(132) represents 4 byte continuous range from -2,147,483,648 to 2,147,483,647 when Torque is turned off regardless of Operating Mode(11).
However, Present Position(132) will be reset to an absolute position value within one full rotation in following cases:

  1. When Operating Mode(11) switches to Position Control Mode, Present Position(132) will be reset to an absolute position value within a full rotation.
  2. When torque is turned on in Position Control Mode, Present Position(132) will be reset to an absolute position value within one full rotation.
  3. Turning on the power supply or using Reboot Instruction.

Notice that Present Position(132) value can be affected by Homing Offset(20) .

Velocity Trajectory(136)

This is a target velocity trajectory created by Profile. Operating method can be changed based on control mode. For more details, please refer to the Profile Velocity(112).

  1. Velocity Control Mode : When Profile reaches to the endpoint, Velocity Trajectory(136) becomes equal to Goal Velocity(104).
  2. Position Control Mode, Extended Position Control Mode : Velocity Trajectory is used to create Position Trajectory(140). When Profile reaches to an endpoint, Velocity Trajectory(136) is cleared to ‘0’.

Position Trajectory(140)

The Position Trajectory(140) is a desired position trajectory created by the Profile.
The Position Trajectory(140) is used only when the Operating Mode(11) is the Position Control Mode, Extended Position Control Mode.
For more details, see What is the Profile.

Present Input Voltage(144)

The Present Input Voltage(144) indicates present voltage that is being supplied. For more details, see the Max/Min Voltage Limit(32, 34).

Present Temperature(146)

The Present Temperature(146) indicates internal temperature of DYNAMIXEL. For more details, see the Temperature Limit(31).

Indirect Address, Indirect Data

Indirect Address and Indirect Data are useful when accessing two remote addresses in the Control Table as sequential addresses. - Sequential addresses increase Instruction Packet efficiency. Addresses that can be defined as Indirect Address is limited to RAM area(Address 64 ~ 661).

Indirect Address Range Description
64 ~ 661 EEPROM address can’t be assigned to Indirect Address

Indirect Address and Indirect Data Examples

Example 1 Allocating Size 1 byte LED(65) to Indirect Data 1(224).

  1. Indirect Address 1(168) : change the value to ‘65’ which is the address of LED.
  2. Set Indirect Data 1(224) to ‘1’ : LED(65) also becomes ‘1’ and LED is turned on.
  3. Set Indirect Data 1(224) to ‘0’ : LED(65) also becomes ‘0’ and LED is turned off.

Example 2 Allocating Size 4 byte Goal Position(116) to Indirect Data 2(225), 4 sequential bytes have to be allocated.

  1. Indirect Address 2(170) : change the value to ‘116’ which is the first address of Goal Position.
  2. Indirect Address 3(172) : change the value to ‘117’ which is the second address of Goal Position.
  3. Indirect Address 4(174) : change the value to ‘118’ which is the third address of Goal Position.
  4. Indirect Address 5(176) : change the value to ‘119’ which is the fourth address of Goal Position.
  5. Set 4 byte value ‘1,024’ to Indirect Data 2 : Goal Position(116) also becomes ‘1024’ and DYNAMIXEL moves.

NOTE : In order to allocate Data in the Control Table longer than 2[byte] to Indirect Address, all address must be allocated to Indirect Address like the above Example 2.

NOTE : Indirect Address 29 ~ 56 and Indirect Data 29 ~ 56 can only be accessed with Protocol 2.0.

How to Assemble

Wiring through Back Case

CAUTION : DYNAMIXEL-X Series cable assembly through hollow case

  • Organize the entangled cable before assembling the back case.
  • Do not assemble the back case with entangled cable. The entangled cable can be squashed by the case and cause communication error.
  • Do not assemble both cables through the hollow case.

Option Frame Assembly

Reference

NOTE
Compatibility Guide
Harness Compatibility

What is the Profile

The Profile is an acceleration/deceleration control method to reduce vibration, noise and load of the motor by controlling dramatically changing velocity and acceleration.
It is also called Velocity Profile as it controls acceleration and deceleration based on velocity.
DYNAMIXEL provides 3 different types of Profile. The following explains 3 Profiles.
Profiles are usually selected by the combination of Profile Velocity(112) and Profile Acceleration(108).

When given Goal Position(116), DYNAMIXEL’s profile creates desired velocity trajectory based on present velocity(initial velocity of the Profile).
When DYNAMIXEL receives updated desired position from a new Goal Position(116) while it is moving toward the previous Goal Position(116), velocity smoothly varies for the new desired velocity trajectory.
Maintaining velocity continuity while updating desired velocity trajectory is called Velocity Override.
For a simple calculation, let’s assume that the initial velocity of the Profile is ‘0’.
The following explains how Profile processes Goal Position(116) instruction in Position Control mode, Extended Position Control Mode.

  1. An Instruction from the user is transmitted via DYNAMIXEL bus, then registered to Goal Position(116) (If Velocity-based Profile is selected).
  2. Acceleration time(t1) is calculated from Profile Velocity(112) and Profile Acceleration(108).
  3. Types of Profile is decided based on Profile Velocity(112), Profile Acceleration(108) and total travel distance(ΔPos, the distance difference between desired position and present position).
  4. Selected Profile type is stored at Moving Status(123).
  5. DYNAMIXEL is driven by the calculated desired trajectory from Profile.
  6. desired velocity trajectory and desired position trajectory from Profile are stored at Velocity Trajectory(136) and Position Trajectory(140) respectively.
Condition Types of Profile
VPRFL(112) = 0 Profile not used
(Step Instruction)
(VPRFL(112) ≠ 0) & (APRF(108) = 0) Rectangular Profile
(VPRFL(112) ≠ 0) & (APRF(108) ≠ 0) Trapezoidal Profile

NOTE : Velocity Control Mode only uses Profile Acceleration(108). Step and Trapezoidal Profiles are supported. Velocity Override are supported as well. Acceleration time(t1) can be calculated as below equation.

Velocity-based Profile : t1 = 64 * {Goal Velocity(104) / Profile Acceleration(108)}
Time-based Profile : t1 = Profile Acceleration(108)

NOTE : If Time-based Profile is selected, [Profile Velocity(112)] is used to set the time span of the Profile(t3), while Profile Acceleration(108) sets accelerating time(t1) in millisecond[ms]. Profile Acceleration(108) will not exceed 50% of [Profile Velocity(112)] value.

Certifications

Please inquire us for information regarding unlisted certifications.

FCC

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

WARNING
Any changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

Quick Start

Prerequisites

WARNING:

  • USB2Dynamixel has been discontinued.
  • Some software may not support OS which you use. Be sure to read e-Manual of software you use to check the supported OS for right use of software.

NOTE:

  • U2D2 is a small size USB communication converter that enables to control and operate DYNAMIXEL with PC.
  • U2D2 Power Hub which combines with U2D2 supplies a variety external power source with a stable power supply to DYNAMIXEL.

Compatible Software with DYNAMIXEL

You can use exclusive software for DYNAMIXEL. See the software compatibility on the next table and choose a desired software for your project.

Model AX Series DX Series RX Series EX Series MX Series X-Series PRO Series P Series
R+ Manager 2.0 X X X X O O O O
DYNAMIXEL Wizard O X X O O X (XL320 can be used) O X
DYNAMIXEL Wizard 2.0 O O O O O O O O
DYNAMIXEL SDK O O O O O O O O
DYNAMIXEL Workbench O O O O O O O O

NOTE: You can also use more variety of software. For more information, see the following to check software provided by ROBOTIS.

R+ Manager

R+ Manager is used to handle devices used by a robot. Major functions of this program are as follows.

NOTE: R+ Manager 2.0 or DYNAMIXEL Wizard 2.0 provides diverse features compared to R+ Manager.

R+ Manager 2.0

The R+ Manager 2.0 manages a controller and DYNAMIXEL devices that comprise the robot. By connecting the product, you can update the product to the latest version and test Control Table. The functions that were previously provided in RoboPlus Manager 1.0 and Wizard 1.0 have been combined in RoboPlus Manager 2.0.

WARNING: R+ Manager 2.0 is not compatible with DYNAMIXEL using protocol 1.0.
DYNAMIXEL Wizard 2.0 supports all DYNAMIXEL for Firmware Recovery, Firmware Update, and change data of Control Table of DYNAMIXEL.

DYNAMIXEL Wizard 2.0

DYNAMIXEL Wizard 2.0 is an optimized tool for managing DYNAMIXEL’s from various operating systems.

The following features are provided with DYNAMIXEL Wizard 2.0.

DYNAMIXEL SDK

DYNAMIXEL SDK is a software development kit that provides DYNAMIXEL control functions using packet communication. The API of DYNAMIXEL SDK is designed for DYNAMIXEL actuators and DYNAMIXEL-based platforms. You need to be familiar with C/C++ programming language for right use of the software. This e-Manual provides comprehensive information on ROBOTIS products and applications.

Supported Programming Laguanges and Features:

DYNAMIXEL Workbench

DYNAMIXEL Workbench, based on DYNAMIXEL SDK, is library which provides simple and easier method to use DYNAMIXEL.

Supported Programming Laguanges and Features:

NOTE: DYNAMIXEL Workbench may provide lack of contents or features compared to DYNAMIXEL SDK. In order to use DYNAMIXEL with sufficient contents, use DYNAMIXEL SDK.

Connector Information

Item TTL
Pinout 1 GND
2 VDD
3 DATA
Diagram
Housing
JST EHR-03
PCB Header
JST B3B-EH-A
Crimp Terminal JST SEH-001T-P0.6
Wire Gauge for DYNAMIXEL 21 AWG

Communication Circuit

To control the DYNAMIXEL actuators, the main controller needs to convert its UART signals to the half duplex type. The recommended circuit diagram for this is shown below.

TTL Communication

Drawings

Please also checkout ROBOTIS Download Center for software applications, 3D/2D CAD, and other useful resources!