Rockwell Automation Logix5000 Controllers Produced and Consumed Tags Programming Manual - Manual (Page 25)

Produce and Consume a Tag Chapter 1
The following scenarios explain how producing and consuming tags exchange RPI
for controllers.
Scenario 1
The RPI is within range of the producing controller’s RPI Limits.
There is no default RPI that is set up for the producing controller.
Version 17 and earlier: The consuming controller is brought online with an RPI
configured at 3 ms. The producer accepts the RPI requested by the consuming tag.
All controllers on the multicast connection will be increased to 3 ms for the API,
which is the interval the data is actually being produced.
Version 18 and later: The consuming controller is brought online with an RPI
configured at 3 ms. The producing controller verifies the requested RPI by the
consumer is within the RPI limits set up for the producer. Since the request is
within the range, the producing controller accepts the RPI of the consumer.
Tip: If you use all the default settings of version 18 and later, you have the same behavior as version 17 and
earlier.
Produced and consumed
RPI scenarios
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