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MKS DroneCAN Intergration Video >>
DroneCAN start : https://youtu.be/NP5_RIoX8Bo
https://github.com/DroneCAN/gui_tool
https://zubax.com/products/babel
Connect the Servo to the convert board and the computer.
Then open the DroneCAN GUI Tool to start.
1-1.1 Select CAN interface set to “USB serial device” (USB序列裝置).
1-1.2 CAN bus bit rate set to default “1000000”.
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1-2.1 Enter the DroneCAN GUI Tool interface.
1-2.2 Press 
then start to read all the node device(Servo) data.
1-2.3 Double click the device to display the node(Servo) Properties.
1-3.1 Press the “Fetch All” to display the Servo parameter.
2. DroneCAN interface
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2.1 |
subcriber |
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2.2 |
publisher |
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2.3 |
publisher |
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2.4 |
publisher |
3. Application-level functions
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3.1 |
RPC-service |
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3.2 |
RPC-service |
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3.3 |
RPC-service |
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3.4 |
RPC-service |
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3.5 |
RPC-service |
4.1 ArrayCommand
Actuator Panel : https://youtu.be/hmN6ZP9EF-Y
The control command of the Servo.
Command type 0 : UNITLESS
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Command encoding : -1 ~ 1 |
-60.0°~+60.0° (The default travel Angle of the Servo) |
Using the Panels->Actuator Panel to command the Servo.
Please set the command update rate to 0.01sec, Servo will work more smoothly due to the high command update rate.
4.2 actuator.Status
You can use the actuator.Status feedback data to monitor the physical status of Servo.
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Function |
Type |
unit |
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actuatorID |
integer |
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position |
integer |
° [degree] |
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force(torque) |
integer |
Kg.cm |
|
speed |
integer |
°deg/sec |
Using the Tools->Plotter to add the graphics of Y-T axis.
You can see the message type there has the actuatorStatus Option.
Expression to the plot by typing “msg.” and you will see the all actuatorStatus functions.
Position Feedback : https://youtu.be/hmN6ZP9EF-Y
Force&Current Feedback: https://youtu.be/6MiqRyRupKQ
*Position Feedback graphic
* Force Feedback graphic
4.3 power.CircuitStatus
Force&Current Feedback: https://youtu.be/6MiqRyRupKQ
Voltage&Error flag Feedback : https://youtu.be/DIUP535PmgQ
You can use the power.CircuitStatus feedback data to monitor the electronic status of Servo.
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Function |
Type |
unit |
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voltage |
integer |
1 unit = 0.1 V |
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current |
integer |
1 unit = 0.1 A |
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error_flags |
integer |
1= over voltage 9V 2= under voltage 5V 4= over current |
Using the Tools->Plotter to add the graphics of Y-T axis.
You can see the message type there has the CircuitStatus Option.
Expression to the plot by typing “msg.” and you can see the all CircuitStatus functions.
* voltage Feedback graphic
* current Feedback graphic
4.4 device.Temperature
You can use the device.Temperature feedback data to monitor the internal temperature of the Servo.
Here has a special function. When the Servo over heating, it will actively feedback the error_flags. You can set the over_heating value by using param.GetSet functions No.24 temperatureLimitVal.
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Function |
Type |
unit |
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deviceID |
integer |
0 ~ 255 |
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temperature |
integer |
1 unit = 1 °C |
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error_flags |
integer |
over heating |
* TemperatureProtect Active over 45°C
5.1 GetNodeInfo
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Servo unique ID |
12 byte |
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Date of manufacture |
3 byte, date=[1byte], month=[1byte], year= 2000 + unit8 [1byte] |
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Serial number |
1 byte [0~127] |
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nodeName (Servo Type) |
16 byte |
5.2 NodeStatus
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operatingtime, mode, health |
5.3 param.GetSet
The actual list of parameters on your node depends on firmware version.
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Functions |
Description |
| 0 |
actuatorID |
Servo Control, Channel ID |
| 1 |
NodeID |
Servo setting, status feedback ID |
| 2 | neutralpoint | [1 unit = 0.1°deg] |
| 3 | cmdReversed | True：rotate reversed False：Normal |
| 4 | Boost |
The step of the Motor startup. The larger of the value, the motor startup step will more powerful. Larger value may cause the Servo jitter. |
| 5 | deadband |
Control resolution of the Servo. Too small may cause the Servo make noise. Too large the Servo control resolution will be rough. The deadband is a band of input values in the domain of a transfer function in a control system or signal processing system where the output is zero (no action occurs). |
| 6 | anglezoom(CCW) | 100 unit = 1.0. Magnification |
| 7 | anglezoom(CW) | 100 unit = 1.0 Magnification |
| 8 | Brakecurve |
The Servo will slow down when about to reach the command position. To reduce the inertial force of the mechanically. Larger value is sharp. Lower value is soft. |
| 9 | Softstartcurve(Acceleration) |
1 unit = 0.001° deg/3ms^2 Larger value is sharp. Lower value is soft. |
| 10 | BootupSpdLimitActivation |
The Servo speed will slow start when startup. True：On False：Off |
| 11 | BootupSpdLimitVal |
The value of the Servo speed when startup. 1 unit = 0.01° sec/60°deg |
| 12 | SpeedLimitActivation | True：On False：Off |
| 13 | SpeedLimitValue | 1 unit = 0.01 sec/60°deg |
| 14 | BootupMode |
The Servo will action when Startup with no command : 0 = Holding on current command position 1 = Rotate to #15 BootupAngle position 2 = Servo trun into Brake mode 3 = Servo trun into release mode |
| 15 | BootupAngle |
[1 unit = 0.1°deg] Actived when #14 BootupMode setting = 1. [Max. angle position will limit by different Servo Type.] |
| 16 | cmdLostMode |
The Servo will action when lost Command : 0 = Holding on last command position 1 = Rotate to #18 cmdLostAngle position 2 = Servo trun into Brake mode 3 = Servo trun into release mode |
| 17 | cmdLostTimeout | 1 unit = 0.1 seconds |
| 18 | cmdLostAngle |
[1 unit = 0.1°deg] position. Actived when #16 cmdLostMode setting = 1. [Max. angle position will limit by different Servo Type.] |
| 19 | CurrentProtectActivation | True：On False：Off |
| 20 | ThresholdCurrent |
1 unit = 0.1 A When the Servo operating current over #20 ThresholdCurrent. and over #21 OverCurrentDuration seconds. The Servo will limit the max. current to #22 CurrentLimitVal. |
| 21 | OverCurrentDuration | 1 unit = 0.1 seconds |
| 22 | CurrentLimitVal | 1 unit = 0.1 A |
| 23 | temperatureProtectActivation | True：On False：Off When the Servo temperature is over #24 temperatureLimitVal °C, the Servo output will decrease gradually. When the Servo temperature is lower than #24 temperatureLimitVal °C, the Servo output will be back to normal. |
| 24 | temperatureLimitVal |
The protection mechanism enable when #23 =True. 1 unit = 1°C |
| 25 | actuatorPublishHz |
The transmission rate of Actuator.status. 1 unit = 1Hz, 0=off |
| 26 | CircutPublishHz |
The transmission rate of Circuit.status. 1 unit = 1Hz, 0=off |
| 27 | TemperaturePublishHz |
The transmission rate of Device.Temperature. 1 unit = 1Hz, 0=off |
| 28 | GoBackDefaultsetting |
True：The Servo will go back default setting. False：The Servo is in normal mode. |
5.4 RestartNode
NodeID Restart : https://youtu.be/QKeApZcIXLY
You can use the “RestartNode” to restart the Servo without unplug from the power to renew nodeID when you changing the Node ID by using the param.GetSet.
5.5 file.BeginFirmwareUpdate
The MKS DroneCAN Servo can be easy to update the Firmware by using DroneCAN GUI tool. It can make sure you will have the newest Servo Firmware when you have already own the Servo for a while.
