Fanuc Alarm 65: ILLEGAL COMMAND IN G71–G73
Fanus Control Model: 16/18/21
Fanuc Alarm Description
T Series;1. G00 or G01 is not commanded at the block with the sequence number which is specified by address P in G71, G72, or G73 command. 2. Address Z(W) or X(U) was commanded in the block with a sequence number which is specified by address P in G71 or G72, respectively. Modify the program.
Fanuc Alarm PS900: G72.1 NESTING ERROR Fanus Control Model: Series 15i, 16i, 18i, 21i, and 30i/31i/32i Description This alarm appears when the “G72.1” (Subprogram Call for Figure Copy) command is used incorrectly in CNC programming. The main reason for this alarm is exceeding the “Nesting” limit, that is, when you call several subprograms consecutively within…
Fanuc Alarm PS017 ILLEGAL MODE FOR GOTO/WHILE/DO Fanus Control Model: 10/11/12/15/15i Description This alarm appears when the control system has difficulty executing these macro statements such as GOTO, WHILE, or DO. Does your CNC controller accept these specific commands or is there a fundamental error in the program logic that violates the prevailing rules of…
Fanuc Alarm 002: TV PARITY ALARM Fanus Control Model: 16i/18i/21i Description When a program is loaded into a CNC machine from a PC, laptop, or an old DNC device, the system checks the number of characters in each line and their order. If the TV Check parameter is turned on and the number of characters…
Fanuc Alarm 036 (or P/S 36): CAN NOT COMMANDED G31 Fanus Control Model: Series 16/18/21 Description This alarm occurs when a skip cutting command (G31) is called while the machine is actively using cutter compensation (G41 or G42) or tool nose radius compensation. How to Fix Alarm Cancel cutter compensation by writing G40 before issuing…
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.
In the world of CNC machining, encountering a FANUC 401 Alarm can bring production to a grinding halt. This specific error is one of the most common—yet occasionally frustrating—faults found in FANUC Alpha and Beta series drive systems. Specifically, the 401 alarm stands for “V-Ready Off.” In simpler terms, the CNC control is expecting the…