Fanuc Alarm 4523 ILLEGAL COMMAND IN CIRCLE-NIBBL
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 (I) was set to zero or a negative value. Alternatively, I, J, K, P, or Q was not specified.