Rs-232 communications iwth an slc – Rockwell Automation 2707-L40X_L8X_V40X DTAM Plus Operator Interface Module Installation Instructions User Manual

Page 84

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Chapter 6

Communication Connections and Setup

6–8

The DTAM Plus and RS-232 port of the SLC 5/03, 5/04, 5/05 must be set as
follows for communications to occur:

RS-232C

DTAM Plus

Channel 0

SLC 5/03, 5/04, 5/05

Cable (Catalog No. 1747-CP3)

Gender

Adapter

RS-232 / RS-485 Versions

Gender Adapter Required

Comm Port

DTAM Plus

The DTAM Plus must have an application with AB DH485 operating system
installed. The Baud Rate and Parity of the DTAM Plus and the SLC 5/03,
5/04, 5/05 must be the same. We recommend you use 19200 baud, even
parity, and 8 data bits to match the default settings of an SLC 500
controller.

SLC 5/03, 5/04, 5/05

Make sure that the channel 0 port of the SLC controller is set for DH-485
MASTER using the following parameters.

Parameter

Selections

Recommended

Baud Rate

1200, 2400, 9600, 19.2K

19.2K

Node Address

0 to 31

1①

Maximum Node
Address

0 to 31

1①

Token Hold Factor

1 to 4

1

Diagnostic File Number

0 to 255

Any

Parity

None, Odd, or Even

Even②

Data Bits

7 or 8

8

To provide maximum response times, we recommend that the DTAM Plus be set as node 0 and the
SLC 500 channel 0 as node 1. Maximum node address should be 1. The connections are a
completely separate DH-485 network, you do not need to be concerned about duplicate node
addresses from another network.

SLC 5/03, 5/04, 5/05 (channel 0) only support EVEN parity.

RS-232 Communications with
an SLC 5/03, -5/04, -5/05

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