Fanuc 21 CNC Control: Complete Alarm Code Reference

Fanuc 21 alarm codes complete list. (Fanuc 21 Model B)

Fanuc Series 21-T CNC Control

Fanuc 21 Alarm Codes

• 0 PLEASE TURN OFF POWER
• 1 TH PARITY ALARM
• 2 TV PARITY ALARM
• 3 TOO MANY DIGITS
• 4 ADDRESS NOT FOUND
• 5 NO DATA AFTER ADDRESS
• 6 ILLEGAL USE OF NEGATIVE SIGN
• 7 ILLEGAL USE OF DECIMAL POINT
• 9 ILLEGAL ADDRESS INPUT
• 10 IMPROPER G–CODE
• 11 NO FEEDRATE COMMANDED
• 14 CAN NOT COMMAND G95 (M series)
• 14 ILLEGAL LEAD COMMAND (T series)
• 15 TOO MANY AXES COMMANDED (M series)
• 15 TOO MANY AXES COMMANDED (T series)
• 20 OVER TOLERANCE OF RADIUS
• 21 ILLEGAL PLANE AXIS COMMANDED
• 22 NO CIRCLE RADIUS
• 23 ILLEGAL RADIUS COMMAND (T series)
• 25 CANNOT COMMAND F0 IN G02/G03 (M series)
• 27 NO AXES COMMANDED IN G43/G44 (M series)
• 28 ILLEGAL PLANE SELECT
• 29 ILLEGAL OFFSET VALUE (M series)
• 29 ILLEGAL OFFSET VALUE (T series)
• 30 ILLEGAL OFFSET NUMBER (M series)
• 30 ILLEGAL OFFSET NUMBER (T series)
• 31 ILLEGAL P COMMAND IN G10
• 32 ILLEGAL OFFSET VALUE IN G10
• 33 NO SOLUTION AT CRC (M series)
• 33 NO SOLUTION AT CRC (T series)
• 34 NO CIRC ALLOWED IN ST–UP /EXT BLK (M series)
• 34 NO CIRC ALLOWED IN ST–UP /EXT BLK (T series)
• 35 CAN NOT COMMANDED G31 (T series)
• 36 CAN NOT COMMANDED G31 (M series)
• 37 CAN NOT CHANGE PLANE IN CRC (M seires)
• 37 CAN NOT CHANGE PLANE IN NRC (T seires)
• 38 INTERFERENCE IN CIRCULAR BLOCK (M seires)
• 38 INTERFERENCE IN CIRCULAR BLOCK (T series)
• 39 CHF/CNR NOT ALLOWED IN NRC (T series)
• 40 INTERFERENCE IN G90/G94 BLOCK (T series)
• 41 INTERFERENCE IN CRC (M seires)
• 41 INTERFERENCE IN NRC (T seires)
• 42 G45/G48 NOT ALLOWED IN CRC (M series)
• 44 G27–G30 NOT ALLOWED IN FIXED CYC (M series)
• 46 ILLEGAL REFERENCE RETURN COMMAND
• 50 CHF/CNR NOT ALLOWED IN THRD BLK (M series)
• 50 CHF/CNR NOT ALLOWED IN THRD BLK(T series)