Fanuc Alarm 1200 PULSCODER INVALID ZERO RETURN

Fanuc Alarm 1200 PULSCODER INVALID ZERO RETURN
Fanuc Alarm Description
The grid position could not be calculated during grid reference position return using the grid system as the one–revolution signal was not received before leaving the deceleration dog. This alarm is also generated when the tool does not reach a feedrate that exceeds the servo error amount preset to parameter No. 1841 before the deceleration limit switch is left (deceleration signal *DEC returns to “1”).