Produce and Consume a Tag
Rockwell Automation Publication 1756-PM011J-EN-P - February 2018 25
Important:
RPI limits and default values are not supported for safety tags and
AXIS tags. AXIS produced tags are produced at a rate equal to the
Coarse Update Period of the associated motion group. Safety
produced tags are produced at a rate specified by the Safety Task
Period.
If you have controllers running releases v17 or earlier that are consumers of a
producer from a Compact GuardLogix 5380, CompactLogix 5380,
CompactLogix 5480, ControlLogix 5580, or GuardLogix 5580 controller,
take the following step to make sure consumers of produce tags can connect:
• Verify that all multicast consumed tags of a produce tag are configured
with the same RPI. If they are not, some consumers will fail to connect.
Use the Advanced Options dialog box to establish RPI limitations (range)
and default values when setting up a producing tag for multicast connections.
The RPI Limits configuration, which is disabled when online, must be
within:
• Minimum RPI: 0.2 ms for ControlLogix controllers and for
CompactLogix 5380 controllers, and 1.0 ms for all other
CompactLogix controllers.
• Maximum RPI: 536870.911 ms.
• Default RPI: configurable within the minimum/maximum range.
• 1769-L2x and 1769-L3x controllers: refer to 1769-L2x and 1769-L3x
RPI Limits for additional instructions.
The RPI limits apply only to multicast connections on unscheduled networks. This
functionality is not supported on the ControlNet network.
Important: The Advanced Options dialog box is also used to set up the unicast connection
between a consumer and producer controller. Even though the Unicast check box
is selected by default, multicast connections can be changed to a produced tag
whether or not the box is checked. The check box dictates only whether this
produced tag can accept a unicast connection. The consuming controller
determines if the connection is unicast.
To set RPI limits for multicast connections:
1. Open the Tag Properties dialog box of the produced tag if it isn't
already opened, and then click Connection. The Produced Tag
Connection dialog box opens.
default for producer
tag
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