hi,
- Can I connect TRM240 this microcontroller's serial port with TRM 240's USB port with USB to serial converter ? <<Microcontroller with serial port>> --- <<USBtoSerial>> --- <<TRM240>>
Hard to say, depends on your used converter and microcontroller.
-Or another option is like any configuration of TRM240 to make usb port work as a serial as below:
No, TRM do not have such feature.