Your PLC program (like many from the CNC7 / CNC10 era) assumes a normally-open spindle drive fault signal: closed = fault.
You can tell the PLC program to interpret it the other way around by adding 2 to Parameter 178 (i.e. changing P178 from 1 to 3). Then wiring the normally-closed signal to INP25 should work properly.
Tree CNC DIY upgrade - teething problems
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Re: Tree CNC DIY upgrade - teething problems
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