CH340 Connection to CB3

Technical Questions
1

I have an RS485-to-USB converter with the CH340 IC. I planned to connect the device to 1 of the 4 USB ports on the control box of my UR10 (CB3) and communicate with a gripper via RS485.

However the port did not seem to be recognized by the control box. When using the command “lsusb”, the device is recognized, but when using “ls -l /dev/tty*”, no ttyUSB was listed.

How can I communicate with the CH340 directly from the control box? A gripper that I have offers Modbus RTU via RS485, but the Tool I/O of the UR10 does not features RS485 on analog pins. Please help, thank you in advance.

2

I have encountered similar case previously, looks like the CB doesn’t have a driver to support your CH340 chip type, you can either manually import a driver file into the files system or change another 485-USB converter to try.