3040 Cnc Usb Setup Here

: For water-cooled models, submerge the water pump in a reservoir and connect the cooling lines to the spindle before powering on the machine.

| Error Symptom | Most Likely Fix | |-----------------------------|--------------------------------------------------| | Port not detected | Install CH340 driver, use USB 2.0 port | | “Access denied” on COM port | Close Candle/Mach3, restart app | | Connects but no movement | Check E-stop, power LED on controller, enable pin ($1=255) | | Jerky motion | Lower baud rate to 57600 or 9600 | | Limit switch trigger always | Invert limit pins ($5=1) | 3040 cnc usb setup

Use the provided USB cable to connect the controller box to a computer. : For water-cooled models, submerge the water pump