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ALLEN BRADLEY 1747-L551 PLC Processor

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B–18 RS-232 Communication Interface<br />

<strong>PLC</strong>-5 (Channel 0) to a SLC 5/03, SLC 5/04, or SLC 5/05 <strong>Processor</strong>, IBM<br />

AT, 1770-KF3, 1773-KA, 5130-RM, <strong>PLC</strong>-5, <strong>1747</strong>-KE, or 1746-BAS<br />

(Hardware Handshaking Disabled) ➀ DCD 1<br />

25 Pin <strong>PLC</strong>–5 (ch. 0)<br />

➁<br />

➁<br />

8<br />

3<br />

2<br />

20<br />

7<br />

6<br />

4<br />

5<br />

22<br />

DCD<br />

RXD<br />

TXD<br />

DTR<br />

COM<br />

DSR<br />

RTS<br />

CTS<br />

NC<br />

(DTE)<br />

➀ You can also use cable <strong>1747</strong>-CP3.<br />

Peripheral<br />

Device 9 Pin 25 Pin<br />

GND ➂<br />

1<br />

TXD<br />

RXD<br />

DTR<br />

COM<br />

DSR<br />

RTS<br />

CTS<br />

3<br />

2<br />

4<br />

5<br />

6<br />

7<br />

8<br />

8<br />

2<br />

3<br />

20<br />

7<br />

6<br />

4<br />

5<br />

(DTE)<br />

➁<br />

➁<br />

➁ Jumpers are only needed if you cannot disable the hardware handshaking on the port.<br />

➂ Connect to the shield of the cable.<br />

5130-RM to a Modem (Hardware Handshaking Enabled)<br />

25 Pin 5130–RM<br />

8 DCD<br />

3 RXD<br />

2 TXD<br />

20 DTR<br />

7 COM<br />

6 DSR<br />

4 RTS<br />

5 CTS<br />

22 NC<br />

(DTE)<br />

➀ Connect to the shield of the cable.<br />

Modem 9 Pin 25 Pin<br />

GND ➀<br />

1<br />

DCD 1 8<br />

RXD<br />

TXD<br />

DTR<br />

COM<br />

DSR<br />

RTS<br />

CTS<br />

2<br />

3<br />

4<br />

5<br />

6<br />

7<br />

8<br />

3<br />

2<br />

20<br />

7<br />

6<br />

4<br />

5<br />

RI 9 22<br />

(DCE)<br />

Publication <strong>1747</strong>-6.2

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