Select the folder where you installed the driver initially (often C:\Program Files (x86)\WCH.CN\CH341SER ). B. COM Port Conflicts
Open the on your PC (Right-click the Start button > Device Manager). Look for a section called Ports (COM & LPT) .
Select "I accept this agreement" and click Next .
The driver installation creates a virtual COM port that routes your design software data through the physical USB cable. You must find the specific number assigned to this port. Keep your plotter turned on and plugged into the computer. Open the . Expand the Ports (COM & LPT) category.
Change the to a lower, available number (e.g., COM3). C. Cable Issues redsail cutting plotter usb driver install
Once Artcut is installed and the driver is loaded:
Avoid using USB 3.0 ports (blue slots) or external USB hubs. Plug the cable directly into a motherboard USB 2.0 slot (usually black slots on the back of a desktop computer). Try a shorter, shielded USB cable if the issue persists. 2. The cutter cuts random lines or garbled shapes
If you need help resolving a specific error during setup, please let me know: Your (Windows 10, 11, etc.)
: Ensure you are installing the correct driver for your specific unit (usually the CH340/341 or FTDI versions). Redsail Cutting Plotter User Manual for USB Port - emoc Select the folder where you installed the driver
Most Redsail plotters communicate through a USB-to-Serial chip, specifically the CH340 driver Plug and Detect
By following these steps, your Redsail cutting plotter should be fully operational. Once the COM port is stable in your Device Manager, you’re ready to start cutting.
This implies a hardware connection failure. Swap out your USB cable for a high-quality, shielded cable under 2 meters. Alternatively, try plugging the machine into a USB 2.0 port instead of a blue USB 3.0/3.1 port, as some older Redsail control boards cannot process high-speed USB 3.0 signals. Error: The COM Port Number Keeps Changing
It's not uncommon to encounter problems during installation. Here are some of the most frequent issues and their solutions. Look for a section called Ports (COM & LPT)
Below are installation steps that work for most Redsail cutters. The exact procedure varies slightly depending on your Windows version.
Problem: The Machine Cuts Random Lines or Garbage Characters
folder within the FlexiSIGN installation directory before it will appear in the Production Manager.
Your design software needs to know exactly which virtual port the cutter is attached to.