Use This Chapter; Terminology - Rockwell Automation Allen-Bradley ControlNet 1734-ACNR User Manual

Use This Chapter

Read this
chapter for:
•
1756-CN2, 1756-CN2R modules
•
1756-CNB, 1756-CNBR modules
•
1769-L32C, 1769-L35CR controllers
•
1784-PCICS, 1784-PKTCS cards
•
1788-CNx cards
If The Data
Needs regular, fast delivery at an interval that you specify
Is sent when a specific condition occurs in your application

Terminology

1
Produce and Consume Tags
(Interlock Controllers)
This chapter describes how to interlock (produce and consume tags)
controllers via a ControlNet network.
For This Information
Terminology
Set Up the Hardware
Determine Connections for Produced and Consumed Tags
Organize Tags for Produced or Consumed Data
Adjust for Bandwidth Limitations
Produce a Tag
Consume a Tag
Additional Steps for a PLC-5C or ControlNet Scanner Card
Interlocking controllers is a method of sharing scheduled data between
controllers. Methods of communicating with other controllers are listed below:
Then
Produce and consume a tag
Execute a message (MSG)
instruction
A Logix5000 controller lets you produce (broadcast) and consume (receive)
system-shared tags.
Term Definition
produced A tag that a controller makes available for use by other controllers. Multiple
tag controllers can simultaneously consume (receive) the data. A produced tag
sends its data to one or more consumed tags (consumers) without using logic.
The produced tag sends its data at the RPI of the fastest consuming tag.
consumed A tag that receives the data of a produced tag. The data type of the consumed
tag tag must match the data type (including any array dimensions) of the
produced tag. The RPI of the fastest consumed tag determines the period at
which the produced tag is produced.
For two controllers to share produced or consumed tags, both controllers
must be attached to the same ControlNet network.
Chapter
See Page
5-1
5-2
5-3
5-3
5-6
5-7
5-9
5-12
See Chapter
Produce and Consume Tags
(Interlock Controllers)
Peer-to-Peer Messaging
Publication CNET-UM001C-EN-P - November 2005
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