Heidenhain · NC Control
The measured status of the '-N0' signal is at a 'high' level, and the '-N0' signal fails to change to the 'active' ('low' level) status. This indicates a potential software error or a hardware defect.
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Power cycle the NC control to attempt a reset of the safety circuit and signal states.
Check the wiring and connections related to the -N0 signal path for any damage, loose terminals, or improper shielding.
Inspect the controller board for any visible damage, burnt components, or signs of hardware malfunction.
Verify the safety software configuration and parameters related to the -N0 signal's active state and its expected behavior.
If available, use a multimeter or oscilloscope to monitor the -N0 signal level and confirm it remains high when expected to transition to low.