User's Manual

Cellular M2M-IoT Gateway
IOG761AM-0P001 Quick Installation Guide 14
2.1.5 Connecting Serial Devices
The IOG761 provides one standard serial port DB-9 male connector. Connect the serial
device to the unit DB-9 male port with the right pin assignments of RS-232/485 are shown
as below.
Pin1
Pin2
Pin3
Pin4
Pin5
Pin6
Pin7
Pin8
Pin9
RS-232
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
RS-485
DATA+
DATA-
GND