Publication 1756-UM050A-EN-P - December 2001
About the 1756-ENBT Module
1-5
You configure the producer and consumer by creating controller
scoped tags using RSLogix 5000 software (see chapter 7).
Specifying the Requested
Packet Interval (RPI)
The RPI is the update rate specified for a particular piece of data on
the network. The RPI can be specified for an entire rack (using a rack
optimized connection) or for a particular module (using direct
connection). When you add a module to the I/O configuration of a
controller, you must enter the RPI as a parameter. ‘This value specifies
how often to produce the data for that module. For example, if you
specify an RPI of 50ms, it means that every 50ms the I/O module
should send its data to the controller or that the controller should send
its data to the I/O module.
RPIs are only used for modules that produce data. For example a local
1756-ENBT module (i.e., an ENB module in the same chassis as the
controller) does not require an RPI because it is not a data-producing
member of the system; it is used only as a bridge to remote racks.
What’s Next?
The following chapter describes how to physically install the
EtherNet/IP Bridge module and connect it to the network.
Tag Type
Description
Specify Using RSLogix5000 Software
Produced
(1)
Tags that the controller produced for other
nodes to consume.
Enabled for producing
Number of consumers allowed
Consumed
Tags whose values are produced by another
controller.
Name of controller that owns the tag the local controller wants
to consume
Tag name or instance that the local controller wants to consume
Data type of the tag to consume
Update interval of how often the local controller consumes the tag
data
(1)
Produced and consumed tags must be controller-scoped tags of DINT or REAL data type, or in an array or structure.
Содержание ControlLogix 1756-ENBT
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