Fanuc Alarm 4508: ILLEGAL COMMAND IN RADIUS
Fanuc Alarm 4508: ILLEGAL COMMAND IN RADIUS
Fanuc Control Model: 16 / 18 / 21-Series, 16i/18i/21i and 30i/31i/32i series
Fanuc Alarm Description
In a radius (G88) command, the traveling pitch (Q) or radius (I) was set to zero or a negative value, or the traveling pitch (Q) was greater than or equal to the arc length. Alternatively, I, J, K, P, or Q was not specified.
Have you faced Fanuc Alarm 4508 ILLEGAL COMMAND IN RADIUS on your machine? Share your experience or troubleshooting tips in the comments below to help other CNC operators and programmers clear this error faster!
