Sinumerik Alarm 21670 Channel %1 block %2 illegal change of tool direction with $AA_TOFF active

Sinumerik Alarm 21670 Channel %1 block %2 illegal change of tool direction with $AA_TOFF active

Parameters:
%1 = Channel number
%2 = Block number, label

Definitions:
If an offset has been activated in tool direction by means of $AA_TOFF[i], no block is allowed to be activated in which the offset axis assignment i is modified (plane change, tool change cutting tool <=> turning tool, transformation change, TRAFOOF, TCARR=0, geometry axis change)

Reactions:
– Local alarm reaction.
– Alarm display.
– Interface signals are set.
– Correction block is reorganized.
– NC Stop on alarm at block end.

Remedy:
• Modify part program
• Program TOFFOF()

Program Continuation:
Clear alarm with NC START or RESET key and continue the program.