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Df1 isolated modem connection – Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers User Manual

Page 69

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Connecting the System

3–11

DF1 Isolated Modem Connection

24V dc
(Not needed in this configuration
since the MicroLogix 1000 provides
power to the AIC+ via port 2.)

User supplied modem cable

MicroLogix 1000

Modem

1761-CBL-AM00

or

1761-CBL-HM02

Selection Switch Up

AIC+

(1761-NET-AIC)

For additional information on connections using the AIC+, see the Advanced
Interface Converter (AIC+) and DeviceNet Interface (DNI) Installation Instructions
,
Publication 1761-5.11.

Constructing Your Own Modem Cable

If you construct your own modem cable, the maximum cable length is 15.24 m (50
ft) with a 25-pin or 9-pin connector. Refer to the following typical pinout:

25-Pin

9-Pin

2

5

1

4

6

8

7

3

RTS

TXD

RXD

GND

CD

DTR

DSR

CTS

RXD

3

7

8

20

6

5

4

GND

CD

DTR

DSR

CTS

RTS

TXD

2

Modem

Optical Isolator

2

5

1

4

6

8

7

3

9-Pin

AIC+