Q: I’m having trouble with AR system using Modbus RTU protocol. The motor would not move after receiving commands for positioning. No communication errors and after verifying the NET I/O monitor, the START input is confirmed turned ON but the motor never moves or executes my Data 0 move. The START and END outputs are always ON.
A: Please check that the C-ON input is ON. Your motor should generate holding torque at standstill before it can be commanded to move. For the command to be executed through Modbus when you assign the C-ON in Modbus the direct I/O is also required to be ON. If you are using the AR system with factory settings, then this input is not assigned by default and therefor it will turn on automatically. Below is the description of this C-ON input function for your reference.
If you do assign the C-ON input, then you must turn it on by using the 7Dh register, After the motor generates holding torque, then you can turn on the START input to command it to move.
Here's the AR series user manual for more information:
http://www.orientalmotor.com/products/p ... 065-7E.pdf
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