POSYC 4301/4302/4303 series industrial PCs
Installation, use and maintenance manual - EN
Rev. 1.02
20
6.2 RS485 serial port - COM1
Below is the pinout of the DB9 male connector on the POSYC.
Serial RS485 - COM1
Pin
Signal
1
DATA-
2
DATA+
5
GND
SHELL
CABLE SCREEN
1
5
6
9
SHELL
2