9600 (or 38400 depending on your specific board revision) Flow Control: Hardware (RTS/CTS) or Xon/Xoff Data Bits: 8 Parity: None Stop Bits: 1 Setting Up in Artcut Click on Cut/Plot to open the output window. Click Device and select Jinka -> JK721 . Go to Link To and choose the matching COM port.
| Issue | Possible Solution | | :--- | :--- | | | Download and install the CH341SER driver manually. If you are using Windows 10/11, ensure that "Driver Signature Enforcement" is disabled if the driver is not signed. | | No communication to cutter | Check the COM port number in Device Manager (Ports COM & LPT). You must select the exact same COM port number in your cutting software, i.e., COM3 or COM5 . | | Computer crashes/Green Screen | This often happens when the print driver is set up incorrectly. Ensure you are not trying to "Print" to the plotter as if it were a paper printer. Use dedicated cut/plot commands from within supported software instead. | | MacOS Connection issues | Macs rarely support the JK 721 via a direct USB-to-USB cable. Use a USB-to-RS232 Serial Adapter with an FTDI Chipset . Cheaper chipsets will not work on Mac. Install the FTDI VCP drivers for MacOS. |
The JK 721 is an HP-GL device. It works best with software that understands "hpgl" drivers. Here are the top three compatible programs and how to set them up.
Most Chinese-manufactured cutting plotters utilize the or CH341 USB-to-Serial chip. What it does: It creates a virtual COM port on your PC. jk 721 cutting plotter driver
The most critical mistake users make is looking for a driver named "JK 721.exe." In reality, the machine uses a standard communication chip inside its USB interface. 1. The CH340 / CH341 Chipset Driver (Most Common)
The JK 721 often uses a USB cable to communicate, but the plotter itself functions on a serial communication protocol. The driver creates a "virtual COM port" (often COM3 or COM4) in your Device Manager, allowing modern software to talk to the machine.
Windows 11 may block older unsigned drivers. You may need to "Disable Driver Signature Enforcement" in Windows Advanced Startup Options to install the CH340 driver. 6. Alternative Connectivity: USB to Serial Adapter 9600 (or 38400 depending on your specific board
: Plug the plotter into your computer’s USB port and turn it on. Open Device Manager on Windows and look under Ports (COM & LPT) . You should see "USB-SERIAL CH340" or similar with an assigned COM port (e.g., COM3). 2. Configure Your Software
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: Use the arrow keys on the plotter to move the blade to your starting position and press Origin or Offline/Pause to set it. Troubleshooting Common Issues | Issue | Possible Solution | | :---
Check Device Manager to verify the COM port number. Close any other design or cutting software that might be running in the background. 2. Plotter Cuts Random Lines or "Garbage" Data Cause: Incorrect Baud Rate or Command Language mismatch.
The JK 721 cutting plotter is a reliable workhorse for vinyl cutting, sign making, and apparel design. However, hardware is only as good as the software driving it. Finding, installing, and configuring the correct is the most critical step to ensure clean cuts and prevent tracking errors.
If you're looking to set up your JJK 721 cutting plotter for use with your computer, you'll first need to install the appropriate driver. The driver acts as a bridge between your computer's operating system and the cutting plotter, allowing you to send cutting jobs from your computer to the plotter.