Okuma Alarm-B 2723 ATC next tool preparation interlock
An MT command was issued with an ATC operation sequence number other than 1 or 41. The tool specified by the MT command was not found in the magazine. The tool specified by the MT command could not be carried in the ready station because the other tool had been already prepared. The tool specified by the MT command is of a type that cannot be mounted in the turret.
The ATC macro command M321 was issued before completion of MT command.
1->MT command was issued during a tool calling or storing movement.