Why this matters
If connection stops after the port opens, look for a controller startup response, port contention, cable/power issues or wrong device/port selection.
How to think about it
Define the result you actually need, then confirm the active machine profile, units and operating mode before changing parameters.
Practical workflow
- Define the result you actually need, then confirm the active machine profile, units and operating mode before changing parameters.
- Change one meaningful variable at a time and use Preview/Frame or offline analysis before running a real job.
- If the issue repeats, keep evidence: Console output, a G-code sample, the exact settings used and material context. Evidence makes troubleshooting reproducible.
If the result is wrong
If connection stops after the port opens, look for a controller startup response, port contention, cable/power issues or wrong device/port selection.