Messaging Examples; Local Versus Remote Type Message; Local Message; Remote Message - Allen-Bradley SLC 500 Series Reference Manual

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Local versus Remote type

Messaging Examples

The purpose of this chapter is to illustrate some of the more common but

elaborate messaging examples using the SLC 500 processors.

Not all examples will appear with a full detailed step by step procedure

Step by Step procedures are available for all of the examples in

KnowledgeBase Documents at the following website:

http://support.rockwellautomation.com/knowledgebase

Search for the associated Knowledge Base Document Number referenced

after the associated example.

It may be necessary to register and obtain a username and password if

accessing the website for the first time or if your web browser does not have

cookies enabled.

Refer to the SLC 500 Modular Hardware Style User

Manual, publication 1747-UM011, for the setup of

DH-485, DH+, and Ethernet networks, as well as DF1

communication.

A Local MSG is used to transmit data from one processor to another on the

same network. If two processors are connected together a Local type message

is used to transfer information from one to the other.

A Remote MSG is used to exchange information to a device that is not

connected on the local network. A device (another processor or an actual

bridging device) on the local network will act as a bridge or gateway to the

destination network.

Publication 1747-RM001G-EN-P - November 2008

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