Mazak Alarm 391 LD/ULD/ACHG CONDITION ALARM
During ATC, although returning the tool was attempted, the magazine pocket tool confirmation sensor did not detect that tool probably because of dropping. Valid when bit 6 in parameter R59 is set to “1”. (Standard setting: 1)
Check and remedy
Confirm whether the tool is mounted in the ATC arm. Check the magazine pocket tool confirmation sensor for normal operation.