Fanuc Alarm 181 FORMAT ERROR IN G81 BLOCK (Hobbing machine, EGB) (M series)
Fanuc Alarm Description
G81 block format error (hobbing machine)
1) T (number of teeth) has not been instructed.
2) Data outside the command range was instructed by either T, L, Q or P.
3) An overflow occurred in synchronization coefficient calculation. Modify the program.