
4G PoE IIoT Gateway
1.6.5 Connecting Serial Devices
The IOG851-W series products
provide 4-pin Terminal Block serial port for connecting to your serial device.
Connect the serial device to the terminal block with the right pin assignments of RS-232/485 are shown as
below.
Pin 1 2 3 4
Pin1
Pin2
Pin3
Pin4
RS-232
GND
RXD
TXD
GND
RS-485
GND
DATA-
DATA+
GND
22