The programming module contains a firmware which does not match the device. The programming modules have been switched.
There is an error in the firmware saved on the programming module (general firmware or hardware error). The drive was switched off.
The programming module is faulty.
The control section is faulty.
Replace programming module. Ensure that the firmware on the programming module matches the controller: MPCxxVyy for Advanced devices, MPBxxVyy for Basic devices, MPExxVyy for Economy devices, MPMxxVyy for multi-axis devices
Replace the programming module or replace the firmware on the programming module.