Once installed, the device should appear under "Ports (COM & LPT)" as something like "USB-SERIAL CH340 (COM3)". 3. Configuring Software (GX Works2 / Developer)
Point it to the folder where you unzipped the JXMCU/CH340 files. jxmcu driver work
Use the provided manufacturer CD or download the latest CH341SER.EXE from official sources like WCH.cn. Once installed, the device should appear under "Ports
Select the exact (e.g., COM3) found in your Device Manager. jxmcu driver work
Even with the driver working, your PLC software must be told where to look: Open your programming software (e.g., GX Works2 ). Go to → Serial/USB .