Fanuc Alarm 4701: PROGRAM ERROR (OT –) Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description The value specified in the X-axis move command exceeded the negative value of stored stroke limit 1. (Advance check) Have you faced Fanuc Alarm 4701 PROGRAM ERROR (OT –) on your machine? Share your…

Fanuc Alarm 4700: PROGRAM ERROR (OT +) Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description The value specified in the X-axis move command exceeded the positive value of stored stroke limit 1. (Advance check) Have you faced Fanuc Alarm 4700 PROGRAM ERROR (OT +) on your machine? Share your…

Fanuc Alarm 4650: IMPROPER G-CODE IN OFFSET MODE Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In the cutter compensation mode, an inhibited G code (pattern command, G73, G74, G75, etc.) was specified. Have you faced Fanuc Alarm 4650 IMPROPER G-CODE IN OFFSET MODE on your machine? Share your…

Fanuc Alarm 4630: ILLEGAL COMMAND IN LASER MODE Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In the laser mode, a nibbling command or pattern command was specified. In the tracing mode, an attempt was made to make a switch to the punching mode. Have you faced Fanuc…

Fanuc Alarm 4605: NEED ZRN Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description C–axis synchronization failed. Have you faced Fanuc Alarm 4605 NEED ZRN on your machine? Share your experience or troubleshooting tips in the comments below to help other CNC operators and programmers clear this error faster!  

Fanuc Alarm 4537: ILLEGAL Q VALUE IN MULTI-PIECE Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In the command for taking multiple workpieces (G73, G74), Q is set to a value beyond the range from 1 to 4. Have you faced Fanuc Alarm 4537 ILLEGAL Q VALUE IN…

Fanuc Alarm 4536: NO W, Q COMMAND IN MULTI-PIECE Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description W or Q was not specified in the command for taking multiple workpieces (G73, G74). Have you faced Fanuc Alarm 4536 NO W, Q COMMAND IN MULTI-PIECE on your machine? Share your…

Fanuc Alarm 4535: U/V MACRO NESTING ERROR Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description An attempt was made to call a macro which is defined three times or more using a U or V macro command. An attempt was made to store 15 or more macros in…

Fanuc Alarm 4534: W MACRO NUMBER NOT FOUND Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description Macro number W specified in a U or V macro command is not stored. Have you faced Fanuc Alarm 4534 W MACRO NUMBER NOT FOUND on your machine? Share your experience or troubleshooting…

Fanuc Alarm 4533: U/V MACRO MEMORY OVERFLOW Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description An attempt was made to store too many macros with a U or V macro command. Have you faced Fanuc Alarm 4533 U/V MACRO MEMORY OVERFLOW on your machine? Share your experience or troubleshooting…

Fanuc Alarm 4532: IMPROPER U/V MACRO NUMBER Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description The number of an inhibited macro (number beyond the range from 01 to 99) was specified in a U or V macro command. Have you faced Fanuc Alarm 4532 IMPROPER U/V MACRO NUMBER on…

Fanuc Alarm 4531: U/V MACRO FORMAT ERROR Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description An attempt was made to store a macro while storing another macro using a U or V macro. A V macro was specified although the processing to store a macro was not in…

Fanuc Alarm 4530: A/B MACRO NUMBER ERROR Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description The number for storing and calling by an A or B macro was set to a value beyond the range from 1 to 5. Have you faced Fanuc Alarm 4530 A/B MACRO NUMBER…

Fanuc Alarm 4524: ILLEGAL COMMAND IN LINE-NIBBL Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In a linear nibbling (G69) command, the traveling pitch (Q) was set to zero, negative value, or a value larger than or equal to the limit (No. 16186, 16187). Alternatively, I, J, P,…

Fanuc Alarm 4523: ILLEGAL COMMAND IN CIRCLE-NIBBL Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In a circular nibbling (G68) command, the traveling pitch (Q) was set to zero, a negative value, or a value larger than or equal to the limit (No. 16186, 16187), or the radius…

Fanuc Alarm 4522: EXCESS NIBBLING MOVEMENT (C) Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In the circular nibbling (G68) or usual nibbling mode, the C-axis traveling distance was larger than or equal to the limit (No. 16194). Have you faced Fanuc Alarm 4522 EXCESS NIBBLING MOVEMENT (C) on…

Fanuc Alarm 4521: EXCESS NIBBLING MOVEMENT (X, Y) Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In the nibbling mode, the X-axis or Y-axis traveling distance was larger than or equal to the limit (No. 16188 to 16193). Have you faced Fanuc Alarm 4521 EXCESS NIBBLING MOVEMENT (X,…

Fanuc Alarm 4520: T, M INHIBITED IN NIBBLING-MODE Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description T code, M code, G04, G70 or G75 was specified in the nibbling mode. Have you faced Fanuc Alarm 4520 T, M INHIBITED IN NIBBLING-MODE on your machine? Share your experience or troubleshooting…

Fanuc Alarm 4511: ILLEGAL COMMAND IN CIRCLE-PUNCH Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In a circular punching (G46, G47) command, the same position was specified for both start and end points of the arc, radius (R) of the arc was set to zero, or the pitch…

Fanuc Alarm 4510: ILLEGAL COMMAND IN LINE-PUNCH Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series Fanuc Alarm Description In a linear punching (G45) command, the traveling distance was set to zero or a value 1.5 times larger than the tool size (P) or less. Alternatively, P was not specified. Have you…