Schweitzer Engineering Laboratories SEL-251 - EIA-232 Cables

6-4 Installation Date Code 20000421
SEL-251, -2, -3 Instruction Manual
Figure 6.1: Nine-Pin Connector Pin Number Convention
EIA-232 Cables
Cable 234A
SEL-251 9-Pin *DTE Device
Cable 222
SEL-251 **DCE Device
Cable 231
SEL-PRTU SEL-251
(female chassis connector, as viewed from outside panel)
GND 5
TXD 3
RXD 2
CTS 8
GND 5
TXD 3
RTS 7
RXD 2
CTS 8
GND 9
GND 1
TXD 2
RXD 4
CTS 5
+12 7
GND 9
5 GND
2 RXD
3 TXD
7 RTS
8 CTS
1 DCD
4 DTR
6 DSR
7 GND
2 RXD
20 DTR
3 TXD
8 CD
1 GND
5 GND
2 RXD
3 TXD
7 RTS
8 CTS
9 GND
Jumper