Interfacing with a Generic Microcontroller
The ComfileHMI's RS-232 ports are PC-level (+/-12V), so it may be necessary to adapter your MCU's 5V or 3.3V UART signals.
For adapting 5V levels, use a
MAX232 or similar transceiver.
For adapting 3.3V levels, use a
MAX3232 or similar transceiver.
ComfileHMI Project Communication Settings
Example