Fanuc Alarm 1820 ILLEGAL DI SIGNAL STATE

Fanuc Alarm 1820 ILLEGAL DI SIGNAL STATE
Fanuc Alarm Description
1) An each axis workpiece coordinate system preset signal was turned “1” in the state in which all axes on the path including the axis on which to perform preset with the each axis workpiece coordinate system were not stopped or in which a command was in execution.
2) When the M code for performing preset with an each axis workpiece coordinate system preset signal is specified, the each axis workpiece coordinate system preset signal is not input.
3) The auxiliary function lock is enabled.