Allen-Bradley ControlNet Compact GuardLogix 1769, User Manual, Page: 71 / 100

Chapter
5
Produce and Consume Tags
(interlock controllers)
This chapter explains how to interlock (produce and consume tags) controllers
via a ControlNet network.
Topic Page
Terminology 71
Set Up the Hardware 72
Determine Connections for Produced and Consumed Tags 73
Organize Tags for Produced or Consumed Data 75
Adjust for Bandwidth Limitations 76
Produce a Tag 77
Consume a Tag 79
Interlocking controllers is the preferred method of sharing scheduled data
between controllers when data needs to be delivered regularly, quickly and at a set
interval.
Terminology
A Logix5000 controller lets you produce (broadcast) and consume (receive)
system-shared tags.
Term Definition
Produced tag A tag that a controller makes available for use by other controllers. Multiple
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 tag A tag that receives a produced tag’s data. The data type of the consumed tag
must match the data type, including any array dimensions, of the produced
tag. The RPI of the fastest consumed tag determines the rate at which the
produced tag is produced.
For two controllers to share produced or consumed tags, they must reside on the
same ControlNet network.
Rockwell Automation Publication CNET- UM001E-EN-P - June 2016
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