Configuring EtherMeter™–CompactLogix Communications Using EtherNet/IP
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The purpose of this document is to provide assistance to the Allen Bradley CompactLogix PLC user who wishesto connect to an EtherMeter using theEtherNet/IP™protocol. This document assumes that the user is well‐versed in CompactLogix PLC’s and the RsLogix 5000 Programming Environment.
When creatinganEtherNet/IP™ client/server connection between an Allen Bradley CompactLogixPLC(client)and an EtherMeter™ (server), no specialsetup is generally required withintheEtherMeter’s Setup Menu. The EtherMeterfeatures an“always‐on” EtherNet/IP™server on TCP logical port44818; and itisconfigured to auto‐detect and service incoming client requests from CompactLogix PLC’s. To simplify integration into an EtherNet/IP network, the EtherMeter emulates aSLC/500 series PLC.
In thissample application, the CompactLogixPLC’s usedincluded aModel 1769‐L32E with integratedEthernetand aModel 1768‐L43 withan attached 1768‐ENBT/A EtherNet/IPBridge Module. BothCompactLogix processors were flashed with firmware version 17.2.5. The programming softwarewasRsLogix5000 Version 17.
The 1769‐L32E processor wasprovided courtesy ofMissouri American WaterCompany; and the 1768‐L43 processor and RsLogix5000 programmingsoftware were provided courtesy ofFrench GerlemanCorp.(St.Louis, MO).
1. Wiring Configuration.
Inthis example, theEthernet ports of theCompactLogix and EtherMeter are wired directly to each other, without anEthernet switch, using a singleEthernetcrossover cable. Alternatively, theEthernet ports ofboththeCompactLogix and EtherMeter could beconnected to a common Ethernet switch ifexpanded networkconnectivity is desired. For reference, the wiringandhardwareconfiguration is illustrated in Figure 1.
Thealternateconfiguration was createdwitha CompactLogixModel 1768‐L43 plus a1768‐ENBT/A EtherNet/IP bridgemodule. SeeFigure 2. However, the setup and programming procedures were identical. For the sake of brevity, this Application Note documents connection tothe 1769‐L32E.
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