B–11RS-232 Communication Interface
Publication
1747-6.2
IBM A
T to a Modem (Hardware Handshaking Enabled)
DCD
RI
1
2
3
4
5
6
7
8
9
8
3
2
20
7
6
4
5
22
RXD
TXD
DTR
COM
DSR
RTS
CTS
GND
1
1
3
3
4
5
6
7
8
9
8
2
2
20
7
6
4
5
22
DCD
RI
RXD
TXD
DTR
COM
DSR
RTS
CTS
9 Pin25 Pin
IBM
AT
9 Pin 25 PinModem
➀
(DTE) (DCE)
➀
Connect to the shield of the cable.
IBM A
T to SLC 5/03, SLC 5/04, or SLC 5/05 Processor
, 1770-KF3,
1775-KA, 1773-KA, 5130-RM or PLC-5 (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
1
3
3
4
5
6
7
8
9
8
2
2
20
7
6
4
5
22
DCD
RI
RXD
TXD
DTR
COM
DSR
RTS
CTS
9 Pin25 Pin
IBM
AT
9 Pin 25 Pin
(DTE) (DTE)
➁
➁
Peripheral
➁
➁
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.
SLC
5/03, SLC 5/04, or SLC 5/05 Processor Connected 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
1
3
4
5
6
7
8
9
2
DCD
NC
RXD
TXD
DTR
COM
DSR
RTS
CTS
9 Pin
5/03
9 Pin 25 Pin
➀
(DTE) (DCE)
Modem
9
22RI
➀
Connect
to the shield of the cable.
AB PLCs
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