Sinumerik Alarm 28011 IPO time insufficient for NCU link. Link cycle time: %1
Parameters:
%1 = Microseconds
Definitions:
Error message of the NCU link module. All messages must be transmitted within one interpolator cycle. This applies particularly to message retries. The time was not sufficient! The parameter indicates how many microseconds the NCU link module needs in order to send the message.
Reactions:
– Alarm display.
– Interface signals are set.
– NC not ready.
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
Remedy:
Increase the interpolator cycle time, i.e. modify one of the following MDs on all NCUs. IPO_SYSCLOCK_TIME_RATIO SYSCLOCK_CYCLE_TIME
Program Continuation:
Switch control OFF – ON.
References
- Siemens Diagnostics Guide by Siemens