Rockwell-automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Instrukcja Użytkownika Pobierz pdf (Strona 159)

Publication IASIMP-QS010B-EN-P - October 2009 159

Network Communication Chapter 2

EtherNet/IP Network Features

When used with the CompactLogix packaged controller, the EtherNet/IP

communication network provides these features:

• Supports messaging, produced/consumed tags, HMI, and

distributed I/O

• Encapsulation of messages within standard TCP/UDP/IP protocol

• Use of a shared application layer with the DeviceNet network

• Easily interfaces via RJ45, category 5, unshielded, twisted-pair cable

• Supports half/full-duplex 10 Mbps or 100 Mbps operation

• Supports the use of standard switches

• Does not require network scheduling

• Does not require the use of routing tables

To view an example of an EtherNet/IP network that includes an 1769-L23E

packaged controller, see the network configurations shown in the section

Configurations for Quick Start

on page 6.

EtherNet/IP Network Connections

You indirectly determine the number of connections the controller uses by

configuring the controller to communicate with other devices in the system.

Connections are allocations of resources that provide more reliable

communication between devices than unconnected messages.

A connection is a point-to-point communication mechanism used to transfer

data between a transmitter and a receiver. An EtherNet/IP CIP connection

transfers data from an application running on one end-node to an application

running on another end-node. A CIP connection is established over a TCP

connection. A single TCP connection can support multiple CIP connections.

For more information about CIP and TCP connections, see the Ethernet

Performance Application Solution, publication ENET-AP001

Packaged Controllers, EtherNet/IP Connections, and RPI

The built-in EtherNet/IP port of the packaged controller supports 32 CIP

connections over an EtherNet/IP network. With these controllers, the number

of end-node connections effectively supported depends on a connection’s RPI.

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Rockwell-automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Instrukcja Użytkownika Strona 159