Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 46)

Publication 1794-UM001G-EN-P - January 2007
46 Manage Controller Communications
For two controllers to share produced or consumed tags, both
controllers must be attached to the same control network (such as a
ControlNet or Ethernet/IP network). You cannot bridge produced and
consumed tags over two networks.
The total number of tags that can be produced or consumed is limited
by the number of available connections. If the controller uses all of its
connections for I/O and communication devices, no connections are
left for produced and consumed tags.
For more information... The Logix5000 Controllers Common Procedures Manual, 1756-PM001
provides information on how to:
• produce a tag
• consume a tag
• produce a large array
The Logix5000 Controllers Design Considerations Reference Manual,
1756-RM094 provides guidelines on how to:
• create produced and consumed tags
• specify an RPI
• manage connections
This type of tag Description
produced
A produced tag allows other controllers to consume the tag, which means that a controller
can receive the tag data from another controller. The producing controller uses one
connection for the produced tag and one connection for each consumer. The controller’s
communication device uses one connection for each consumer.
As you increase the number of controllers that can consume a produced tag, you also
reduce the number of connections the controller and communication device have available
for other operations, like communications and I/O.
consumed Each consumed tag requires one connection for the controller that is consuming the tag.
The controller’s communication device uses one connection for each consumer.