RS485 serial port

The GW102 gateway provides two RS485 communication serial ports, COM1 and COM2, both of which are electrically isolated design.

The physical drawing of the interface is as follows

Each RS485 serial port has three terminals. The silkscreen instructions are as follows:

COM1 serial port signal
Linux device name is /dev/ttymxc3

COM2 serial port signal
Linux device name is /dev/ttymxc5