Step 6 of 12 · Ch 4, 7, 13

6. PC & Mach3 + UC100

Genuine UC100, Premier profile, dry motion proof.

⚠ Caution — Dry test first

Use a dry test whenever a live arc is not required — plasma power off or torch-firing output safely disabled.

⚠ Safety — Never bypass safety circuits

Never bypass the emergency stop, limit circuit, charge pump, enclosure interlock, or protective earth to keep production running.

ℹ Note — Your machine profile wins

Machine-specific profiles, wiring diagrams, pin maps, motor tuning, and cut charts always override generic examples. Escalate when unsure.

1. Computer and UC100 startup
- Dedicated control PC: sleep and USB power-saving disabled
- Genuine UC100 on a dependable direct USB port (avoid unpowered hubs)
- Official CNCdrive UCx00 driver + Mach3 plugin matched package
- Start Mach3; select UC100; wait for any firmware match to finish
- Green LED steady; blue indicates active Mach3 connection
- Load the correct Premier machine profile — do not copy pins from another revision
2. Dry motion proof (torch disabled)
Plasma off or torch command safely disabled. Release E-stop; Reset in Mach3. Jog X/Y/Z at low speed; confirm direction. Prove slaved gantry sides together. Test home/limit inputs on Diagnostics before full homing. Measure a commanded 1" or 10" move. Run the two-inch square G-code above the plate with torch disabled.
Warning: Stop immediately if an axis runs into a hard stop or motion is uncontrolled.
3. Floating head / probe
With plasma off, confirm probe input changes cleanly when the plate is lifted. Run Premier touch-off at low speed ready to stop. Measure switch offset only via approved machine procedure.

1. Computer and UC100 startup