Sinumerik Alarm 4033 Notice: NCU link communication still not connected
The NCU link communication could not be established due to other active alarms.This is the case,for example,if during boot-up the system detects and modifies incorrect cycle times (see alarm 4110).
– Alarm display.
– Interface signals are set.
– NC not ready.
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
Analyze and fix the other alarms and start the control again.
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens