Tag signal wiring

There’s nothing more frustrating than starting a probing cycle and boom — right away you get “Probe already triggered,” “always triggered,” or the machine behaves like the probe is already touching something when nothing is there.

This symptom can come from all kinds of root causes: electrical noise, wiring, logic state confusion, controller timing, and even how the controller interprets the probe state once it resets. But before we chase ghosts, the key is to understand what “always triggered” actually means and then zero in the true cause with a systematic troubleshooting mindset.