Allen-Bradley SLC 500

B–16 RS-232 Communication Interface
Publication 1747-6.2
1771-KGM to a SLC 5/03, SLC 5/04, or SLC 5/05 Processor , IBM AT,
1770-KF3, 1775-KA, 1773-KA, 5130-RM, or PLC-5 (Hardware
Handshaking Disabled)
➀
DCD 1
2
3
4
5
6
7
8
8
3
2
20
7
6
4
5
RXD
TXD
DTR
COM
DSR
RTS
CTS
(DTE) (DTE)
9 Pin 25 Pin
Peripheral
1
GND
➁
➁
➁
➁
➂
➂
1
3
4
5
6
7
8
2
TXD
RXD
RTS
CTS
DSR
COM
DCD
15 Pin
GND
1 1
DTR
1771–KGM
Device
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 the shield of the cable to the GND pin on one end only . Leave the other end open.
1775-KA 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
1775–KA
9 Pin 25 Pin
➀
(DTE) (DCE)
Modem
9 22RI
➀
Connect to the shield of the cable.