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Developer guide 6 INTEGRATION WITH CONTROLLOGIX PROGRAMMABLE AUTOMATION CONTROLLERS PACS USING ETHERNET IP Concepts and Principles of EtherNet IP Communication with Rockwell Automation Products Authors Vivek Hajarnavis Richard Piggin Ray Romito Viktor Sch

INTEGRATION WITH CONTROLLOGIX PROGRAMMABLE AUTOMATION CONTROLLERS PACS USING ETHERNET IP Concepts and Principles of EtherNet IP Communication with Rockwell Automation Products Authors Vivek Hajarnavis Richard Piggin Ray Romito Viktor Schi ?er Version CINTEGRATION WITH CONTROLLOGIX PROGRAMMABLE AUTOMATION CONTROLLERS PACS USING ETHERNET IP Contents Introduction Explicit Messaging Use of CIP Routing Data Organization in the Controller Outbound Explicit Messages Inbound Explicit Messages Explicit Message Response Times I O Messaging Further design considerations EtherNet IP communication with Add-On Instructions Introduction ?? Why Add-On Instructions Generic bene ?ts of Add-On Instructions Creating an AOI Steps to building an AOI Integration with FactoryTalk View software Appendix A ?? Accessing Tags in a Logix Controller Glossary References Developer Resources CINTEGRATION WITH CONTROLLOGIX PROGRAMMABLE AUTOMATION CONTROLLERS PACS USING ETHERNET IP Introduction Explicit Messaging Introduction Many Rockwell Automation products support communication via EtherNet IP however the type of communication it supports and the details of the communication vary from product to product The CIP Networks Library from ODVA Open DeviceNet Vendor Association provides detailed information about EtherNet IP and the speci ?cations that de ?ne Common Industrial Protocol CIP as well as its adaptation to various network protocols What is commonly referred to as ??the EtherNet IP Speci ?cation ? comprises two volumes see references and of this seven-volume library All EtherNet IP-enabled products support the minimum explicit messaging server functionality by allowing explicit messaging access to ID Object and other required objects Although useful to identify a product this communication is not the core requirement of an industrial application Several guide documents see references through detail the communication with Rockwell Automation products This document does not aim to replace these guides but intends to highlight the communication concepts For more information about the Common Industrial Protocol and EtherNet IP please refer to the the CIP eTraining ClassroomTM an instructional CD designed to help developers understand and apply the fundamentals of the Common Industrial Protocol The CD provides a cost- e ?ective alternative to traditional training and can assist in product development and reducing time to market For an introduction to EtherNet IP interface development the ODVA guide to EtherNet IP development provides a complete background to EtherNet IP along with steps to follow for a successful development Explicit Messaging Before the CIP concepts were made public a range of legacy products were developed Although these products are true explicit messaging servers and sometimes clients as well they use special older protocol mechanisms such as PCCC see meaning they communicate through a vendor-speci ?c object using object- speci ?c services The data portion of the explicit message contains additional address information Newer products especially those within the Logix family are explicit messaging servers with fully integrated CIP principles In order to leverage their capabilities several product details need to be understood CIP is the preferred method of communicating to these products The Logix family also supports the PCCC encapsulated messages to access controller data organized in PLC- style Please refer to the Logix Data Access manual for