Fanuc Alarm 21: ILLEGAL PLANE AXIS COMMANDED

This alarm appears in Fanuc control systems when a change has been made to the system’s memory or parameters that requires a restart of the machine to take effect. This is usually not a “fatal” fault, but rather an instruction to refresh the system. Fanus Control Model: This is one of the most direct and…

Fanuc Alarm 85: COMMUNICATION ERROR Fanus Control Model: Series 16, 18, 21 (including i-Series) Description This alarm appears when there is an interruption in data transmission between the controller and an external device (such as PC or USB). This alarm indicates that while you were loading or downloading a program, an “Overrun,” “Framing,” or “Parity”…

Fanuc Alarm PS123: Missing END Statement Fanus Control Model: Series 0i, 16i, 18i, 21i, and 30i/31i/32i controls Description When you forget to write END at the end of a program using commands like `WHILE` or `IF` in a macro program, the CNC system gets confused and generates an alarm. How to Fix Alarm Go into…

Fanuc Alarm 7: ILLEGAL USE OF DECIMAL POINT Fanus Control Model: 16/18/21 Fanuc Alarm Description Decimal point “.” input error (A decimal point was input after an address with which it can not be used. Or two decimal points were input.) Modify the program.

Fanuc Alarm 72: TOO MANY PROGRAMS Fanus Control Model: 16/18/21 Fanuc Alarm Description The number of programs to be stored exceeded 63 (basic), 125 (option), 200 (option), or 400 (option) or 1000 (option). Delete unnecessary programs and execute program registration again.

Fanuc Alarm 20: OVER TOLERANCE OF RADIUS Fanus Control Model: 16/18/21 Fanuc Alarm Description In circular interpolation (G02 or G03), difference of the distance between the start point and the center of an arc and that between the end point and the center of the arc exceeded the value specified in parameter No. 3410.