Rockwell-automation 1747-AENTR SLC 500 EtherNet/IP Adapter User Manual Instrukcja Użytkownika Pobierz pdf (Strona 12)

6 Rockwell Automation Publication 1747-UM076C-EN-E - January 2013

Chapter 1 About the SLC 500 EtherNet/IP Adapter

input modules are not polled by a controller. Instead, they produce (multicast or

unicast) their data periodically or at a cyclic rate.

Unicast is the default for version 20 with multicast as a selectable option. The

frequency of update depends upon the options chosen during configuration and

where on the network the input module resides. The input module, therefore, is a

producer of input data, and the controller is a consumer of the data.

The controller also produces data for other controllers to consume. The

produced and consumed data is accessible by multiple controllers and other

devices over the EtherNet/IP network. This data exchange conforms to the

producer and consumer model.

Support of Direct

Connections

The EtherNet/IP adapter only supports direct connections. A direct connection

is a real-time data transfer link between a Logix controller and a 1746/1747 I/O

module through the 1747-AENTR adapter. Direct I/O connections occur at a

cyclic rate specified by the RPI during configuration.

The adapter can support direct connections to devices in expansion racks. This

feature is supported on Logix Designer application (previously RSLogix 5000

software) revision 21 and later, and firmware revision 2.001 and later.

See the EtherNet/IP Performance and Application Guide, publication number

ENET-AP001

, for more information on connections.

Chapter Summary

This chapter provided an overview of the module features, what it does, and its

function in a Logix system.

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Rockwell-automation 1747-AENTR SLC 500 EtherNet/IP Adapter User Manual Instrukcja Użytkownika Strona 12