ATC DSP controller checklist: tool library, T command and machine signals

Match the ATC controller, spindle and tool magazine interfaces before replacing a control system.

The B57 is retained for ATC use with an eight-tool library, T-command recognition, magazine cover and lift control, plus alarm handling. Verify these functions against the actual machine wiring.

Before replacement, confirm the ATC spindle, tool magazine behaviour, required tool count and the inverter or servo alarm signals.