Whenever I try to initiate a SDORead command, the RET value always returns 390Eh, meaning “Communication Channel is Busy”. I have this same problem no matter what I set the SLOT input value to.
Accordingly, the ERR light on the CM module is double-flashing; the results from Get Node and Network Status show that the “Network is not Ready” and there is a “Node error control event”, the the “Configuration Error” bit for my slave device is set. My slave device is a Nanotec PD4 stepper motor with CANopen controller.
Does anyone have any idea what may be causing this?