Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 135)

Appendix C
RS-232 Communication Interface
C–12
PLC–5 (Channel 0) to a Modem (Hardware Handshaking Enabled)
DCD 1
2
3
4
5
6
7
8
8
3
2
20
7
6
4
5
RXD
TXD
DTR
COM
DSR
RTS
CTS
GND 1
8
2
20
7
6
4
5
22
3
DCD
NC
RXD
TXD
DTR
COM
DSR
RTS
CTS
25 Pin PLC–5 (ch. 0)
9 Pin 25 Pin
➀
(DTE) (DCE)
Modem
9 22 RI
➀ Connect to the shield of the cable.
PLC–5 (Channel 0) to a 5/03 Processor, IBM AT, 1770–KF3, 1773–KA,
5130–RM, PLC–5, 1747–KE, or 1746–BAS (Hardware Handshaking
Disabled)
➀
DCD 1
3
2
4
5
6
7
8
8
2
3
20
7
6
4
5
TXD
RXD
DTR
COM
DSR
RTS
CTS
GND 1
8
2
20
7
6
4
5
22
3
DCD
NC
RXD
TXD
DTR
COM
DSR
RTS
CTS
9 Pin 25 Pin
(DTE) (DTE)
Peripheral
➁
➁
➁
➁
25 Pin PLC–5 (ch. 0)
Device
➂
➀ You can also use cable 1747-CP3.
➁ Jumpers are only needed if you cannot disable the hardware handshaking on the port.
➂ Connect to the shield of the cable.