Learn/GcodePilot/Positioning & offsets
Z Touch-Off Probe
At a glance
- One-click Z touch-off: probe the surface and zero the active WCS Z
- Optional limit-aware rapid pre-position to lift height before the slow probe
- Ohmic + floating-head probing for plasma; a slagged ohmic auto-falls-back to the floating head with a warning
- Lift height and probe feed are unit-aware, persisted per machine
The Touch button runs a Z touch-off: probe down to the surface and zero the active work offset's Z right there. The caret opens its settings:
- Set Z work — zero Z at the probed surface, or just find the surface without re-zeroing.
- Rapid probe — rapid to lift height above work-Z 0 first, then slow-probe. The rapid is limit-aware: if it would leave the Z travel envelope, it's skipped and the routine probes the whole way down instead.
- Lift height / probe feed — unit-aware inputs that accept expressions, persisted per machine.
Plasma probing
With a plasma torch, probing uses both the floating-head switch and the ohmic ring. A worn torch can slag the ohmic sensor into a stuck-on state — instead of halting, the probe automatically falls back to floating-head-only sensing, applies the floating-head backlash, zeros at the true surface, and shows a non-blocking warning so you know to service the tip.