Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 362)

Publication 1785-UM012D-EN-P - July 2005
G-2 Cable Reference
Serial Cable Pin
Assignments The following diagrams show the pin assignments for the cables you need for
serial port communications.
Cable #1
25-pin D-Shell
1770-KF2
RXD 2
GND 5
TXD 3
DCD 1
DTR 4
DSR 6
RTS 7
CTS 8
2
7
3
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
9-pin D-Shell
Cable #2
25-pin D-Shell
1770-KF2
TXD 2
GND 7
RXD 3
RTS 4
CTS 5
DSR 6
DCD 8
DTR 20
3
7
2
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
25-pin D-Shell
Workstation
Cable #3
25-pin D-Shell
1770-KF2
TXD 2
GND 7
RXD 3
RTS 4
CTS 5
DSR 6
DCD 8
DTR 9
3
7
2
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
9-pin D-Shell
Workstation
Cable #4
9-pin D-Shell 25-pin D-Shell
Modem
DCD 1
RXD 2
TXD 3
DTR 4
GND 5
DSR 6
RTS 7
CTS 8
RNG 9
CASE 8
3
2
20
7
6
4
5
22
1
9-pin D-Shell
Workstation
25-pin D-Shell
Modem
RNG 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
GND 7
DCD 8
DTR 9 22
2
3
4
5
6
7
8
20
Cable #5
25-pin D-Shell
Workstation
25-pin D-Shel
Modem
CHS 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
GND 7
DCD 8
DTR 20 1
2
3
4
5
6
7
8
20
Cable #6
11955-I 11957-I 11958-I
11959-I 11960-I 11961-I
(female) (female) (female) (female) (female) (female)
female) (Male) (female) (Male) (female) (Male)
Workstation
Workstation