Your baud rate mismatch. Set both the plotter and Windows COM port to 9600, 8, None, 1, Hardware . Also, disable “Echo” or “Handshaking” in your cutting software.
usually involves installing a USB-to-Serial driver or setting them up as a generic printer. 1. Driver Downloads by Brand
and a null modem cable rather than the built-in USB port, which can sometimes be unreliable. Configuring Your Software How to Add Printer Driver in JK721 Cutting Plotter cutting plotter 721 driver windows 10
For the 721 plotter to execute cuts without freezing or skipping lines, your vinyl cutting software (such as ArtCut, SignMaster, Sure Cuts A Lot, or Flexi) must match the physical hardware properties.
: Select the exact COM Port noted from Device Manager (e.g., COM3). Do not select "USB" as the port type; the driver turns the USB connection into a virtual serial COM port. Baud Rate : Must be set to 9600 . Flow Control : Set to Hardware (RTS/CTS). Troubleshooting Common Windows 10 Errors 1. Error: "Cannot open port" or "Port already in use" Your baud rate mismatch
Ultimate Guide: Installing and Troubleshooting the Cutting Plotter 721 Driver on Windows 10
: This is a critical "secret" step for Windows 10. You must restart your PC in Advanced Startup mode and select "Disable driver signature enforcement" (usually F7) to allow the older plotter drivers to install. Run the Installer Configuring Your Software How to Add Printer Driver
Right-click the device in Device Manager, choose Update Driver -> Browse my computer for drivers -> Let me pick from a list of available drivers on my computer . Select the older, manually installed version (typically dating from 2014 to 2019) instead of the newest update. Issue 2: Plotter Stops Cutting Mid-Way Through a Job
Unplug the USB cable from your Windows 10 computer before starting.