Why Won’t My Genmitsu 3018-PROVer V2 Connect to Candle?
Exact model: Genmitsu 3018-PROVer V2
Safety: Remove cutting tools and disconnect both 24 V and USB before moving connectors or servicing axes.
A.
Start with the accessible checks
What this suggests: Determine whether Windows sees a new serial COM port before changing Candle.
What to do
- Use a known data-capable USB cable connected directly to the computer; disconnect other programs that may already own the COM port.
- Check Windows Device Manager and install the correct CH340 driver if the port is absent.
- In Candle choose the COM port which appeared on connection and 115200 baud; connect, then look for the GRBL startup response.
Still not fixed? Continue to the next check.
↑ Back to the repair pathsB.
If the problem remains after the first checks
What this suggests: The V2 uses a CH340-based USB serial connection and its documented GRBL baud rate is 115200.
What to do
- If the port vanishes during spindle operation, move the USB lead away from spindle wiring and investigate supply/EMI as a separate fault, not a driver setting.
Confirm the repair
Candle establishes stable two-way GRBL communication and can read machine status. Do not flash unrelated 3018 controller firmware to solve a cable issue.