The Fanuc alarm codes let Fanuc and other CNC controls show a fault message. The error code helps determine if there is something wrong with the CNC machine.
Whether it is mechanical or even electrical. Such codes also code error codes. A Fanuc fault code can reveal something wrong with the g-code program.
How is the Fanuc alarm code diagnosed and corrected?
If you want to deal with a fault code, you should understand its meaning. In the next step, you should know what caused the problem based on the meaning.
To make it easier, we will mention some of the codes from a wide Fanuc alarm codes list:
0 PLEASE TURN OFF POWER
A parameter which requires the power off was input, turn off power.
1 TH PARITY ALARM
TH alarm (A character with incorrect parity was input). Correct the tape.
2 TV PARITY ALARM
TV alarm (The number of characters in a block is odd). This alarm will be generated only when the TV check is effective.
3 TOO MANY DIGITS
Data exceeding the maximum allowable number of digits was input. (Refer to the item of max. programmable dimensions.)
4 ADDRESS NOT FOUND
A numeral or the sign “ – ” was input without an address at the beginning of a block. Modify the program.
5 NO DATA AFTER ADDRESS
The address was not followed by the appropriate data but was followed by another address or EOB code. Modify the program.
6 ILLEGAL USE OF NEGATIVE SIGN
Sign “ – ” input error (Sign “ – ” was input after an address with which it cannot be used. Or two or more “ – ” signs were input.) Modify the program.
7 ILLEGAL USE OF DECIMAL POINT
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.
9 ILLEGAL ADDRESS INPUT
Unusable characters were input in significant areas. Modify the program.
10 IMPROPER G–CODE
An unusable G code or G code corresponding to the function not provided is specified. Modify the program.
11 NO FEEDRATE COMMANDED
Feedrate was not commanded to a cutting feed or the feed rate was inadequate. Modify the program.
14 CAN NOT COMMAND G95 (M Series)
A synchronous feed is specified without the option for threading / synchronous feed.
14 ILLEGAL LEAD COMMAND (T Series)
In variable lead threading, the lead incremental and decremental outputted by address K exceed the maximum command value or a command such that the lead becomes a negative value is given. Modify the program.
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