Advantech EKI-1528-DR - Figure 2.22 DB9 Pin Assignment; Figure 2.23 Pin Assignment; Serial Connection

19 EKI-1500 Series User Manual
2.4.3 Serial Connection
EKI-1500 Series provides up to four ports DB9 (male) connectors. RS-232/422/485
pin assignments as below:
Figure 2.22 DB9 Pin Assignment
Figure 2.23 Pin Assignment
Pin 1 2 3 4 5 6 7 8 9
RS-232 DCD RX TX DTR GND DSR RTS CTS RI
RS-422
(RS-485-4w)
TX- TX+ GND RX+ RX-
RS-485 DATA- DATA+ GND
Pin 1 2 3 4 5
GND RX- RX+ TX+ (D+) TX- (D-)
1
9
6
5
1
5