Sinumerik Alarm 300000 Hardware drive bus: DCM not present
The DCM (Drive Communication Master, an ASIC on the NCU module that takes control of the drive bus) has not signaled when powering up the drive. In the 840D, a hardware fault is the possible cause of this error. (For the FM-NC, an incorrect configuration is also possible via the NCK MD 13010 DRIVE_LOGIC_NR).
– NC not ready.
– Channel not ready.
– NC Stop on alarm.
– NC Start disable in this channel.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.
Please inform the authorized personnel/service department. Exchange the NCU module.
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens