700056 — Alarm 700056 (Spindle dir. change not allowed in thread mach.) Diagnostic Tree

This alarm code (700056) is not found in the standard Siemens source manuals; 70xxxx series alarms are typically machine builder (OEM) specific PLC alarms (the 'Spindle dir. change not allowed in thread mach.' message). Please check the NC program to verify if there are any spindle direction change or stop commands (M3, M4, M5) programmed while a threading cycle is active, and move them outside the cycle if necessary.