today i almost faced a workpiece with the center in the work piece.
Is there like M156 M157 (enabeling an disabeling spindel rotation without center in forward position) a posibility to prevent spindel rotation WITH center in forward position.
in other words is there a way to check if the center forward position sensor is not activated before starting the spindle.
Now i made a safety with a common variable skipping to end of program but this is not 100% preventing this mistake.