Fanuc Alarm 6: ILLEGAL USE OF NEGATIVE SIGN
Fanuc Alarm 6: ILLEGAL USE OF NEGATIVE SIGN
Fanus Control Model: Series 0 (0-M, 0-T, 0-Mate, 0i-A/B/C/D), Series 10 / 11 / 12, Series 16 / 18 / 21
Description
If the programmer enters an invalid value in the G-code, such as adding a negative sign to the tool number (T) or spindle speed (S), where only positive values are permitted, the system immediately generates an alarm.
How to Fix Alarm
The quick solution to this problem is to remove the negative sign. Check your program carefully and see where in the block there is a negative sign.