Okuma Alarm-D 4153 MCS CON APA deviation
Difference between CON and APA values has exceeded the allowable limit. The CON-APC deviation is the absolute value of difference between [calculated value written in MCS] and [actual position read from MCS]. The NC control software monitors this deviation. The MCS normally monitors DIFF value.
This alarm appears if the MCS causes a fatal error and cannot monitor the DIFF value.
Absolute value of deviation in hexadecimal (reference unit)
Probable Faulty Locations
– Faulty MCS controller
– Mismatch between MCS data and NC data