See the table below to find out how the physical RS485 serial port lines are mapped into Linux ports within /dev/.
Gate
RS485-1
RS485-2
G100
ttyS1
x
G110
ttyS1
ttyS2
USB converters (FTDI, CH34x, PLxxxx and CPxxxx) are also supported by default. For using other gateways or devices, installation of drivers is necessary.