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Ovation LC Module InterfaceUser Guide U3_1050 Revision 1January 2004Emerson Process Management Proprietary Class 2C Emerson Process Management200 Beta DrivePittsburgh, PA 15238 WARNINGTHIS EQUIPMENT HAS NOT BEEN TESTED TO SHOWCOMPLIANCE WITH NEW FCC RULES (47 CFR, PART 15)DESIGNED TO LIMIT INTERFERENCE TO RADIO AND TVRECEPTION. OPERATION OF THIS EQUIPMENT IN ARESIDENTIAL AREA IS LIKELY TO CAUSE UNACCEPTABLEINTERFERENCE TO RADIO COMMUNICATION, REQUIRINGTHE OPERATOR TO TAKE WHATEVER STEPS ARENECESSARY TO CORRECT THE INTERFERENCE. Since the equipment explained in this manual has a variety of uses, the user and thoseresponsible for applying this equipment must satisfy themselves as to the acceptability of eachapplication and use of the equipment. Under no circumstances will Emerson ProcessManagement be responsible or liable for any damage, including indirect or consequential lossesresulting from the use, misuse, or application of this equipment.The text, illustrations, charts, and examples included in this manual are intended solely to explainthe use and application of an Ovation ® or WDPF ® unit. Due to the many variables associated withspecific uses or applications, Emerson Process Management cannot assume responsibility or liability for actual use based upon the data provided in this manual.No patent liability is assumed by Emerson Process Management with respect to the use of circuits,information, equipment, or software described in this manual.No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any formor by any means, including electronic, mechanical, photocopying or otherwise, without the prior express written permission of Emerson Process Management.This document is the property of and contains Proprietary Information owned by Emerson ProcessManagement and/or its subcontractors and suppliers. It is transmitted in confidence and trust, andthe user agrees to treat this document in strict accordance with the terms and conditions of theagreement under which it was provided.This manual is printed in the USA and is subject to change without notice.Ovation, WDPF and WEStation are registered trademarks of Emerson Process Management.All other trademarks or registered trademarks are the property of their respective holders. Note Send any comments about this manualto
[email protected] © Emerson Process Management Power & Water Solutions, Inc. All rights reserved. Emerson Process Management Proprietary Class 2C Ovation LC Module Interface 1U3_1050 (Rev 1) Emerson Process Management Proprietary Class 2C Section 1. Introduction 1.1Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2Reference Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Section 2. Hardware Configuration 2.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.2Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.3Cable Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Section 3. Software Configuration 3.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2Create the Configuration File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2.1 Analysis of the Sample File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43.2.2 /FILE Section of Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53.2.3 /GROUP Attribute Section of Configuration File . . . . . . . . . . . . . . . . . . . . . 3-83.2.4 /GROUP Point List of Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93.3Creating the AUTOEXEC.BAT File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 Section 4. Operation 4.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.2Link Controller Module/Modbus Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.3LC/Modbus Operation and Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24.3.1 /FILE Attribute and Command Line Options . . . . . . . . . . . . . . . . . . . . . . . . 4-24.3.2 Keyboard Driven (Runtime) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34.3.3 Sample Debugging Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54.3.4 Interpreting the Ovation Link Controller Module LEDs . . . . . . . . . . . . . . . . 4-6 Section 5. Ovation Link Controller Module Redundancy 5.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.2Redundancy Defined. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.3Configuration File Parameters Affecting Redundancy. . . . . . . . . . . . . . . . . . . . . . . . 5-15.4SLC Algorithm Support for Redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.5Redundant Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25.6LC/Modbus Interface Redundancy Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25.7Bumpless Switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35.8Backup Mode Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Section 6. Modem Support 6.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Section 7. Interface Timing Considerations 7.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17.2Interface Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17.2.1 Balancing Communication Priorities with the interval Attribute . . . . . . . . . . 7-17.2.2 Using InterMsgDelay to Throttle Communication . . . . . . . . . . . . . . . . . . . . 7-17.2.3 Setting MessageTimeout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27.2.4 The Significance of watchdogtime. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Table of Contents, Cont’d 2U3_1050 (Rev 1) Emerson Process Management Proprietary Class 2C Section 8. Processing Transactions by Exception 8.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18.2The “By-Exception” Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18.3PLC Type Setpoints and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Section 9. Multi-Drop Networks and FailedDevices 9.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19.2Multi-drop Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19.3Failed Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Section 10. Daniel Floating Point 10.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-110.2Daniel Floating Point Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 Section 11. RTU Versus ASCII Protocol 11.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.2RTU versus ASCII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.2.1 RTU Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.2.2 ASCII Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-111.3Selecting the Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Section 12. Configuration File Examples 12.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-112.2Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-112.2.1 Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-112.2.2 Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-312.2.3 Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-412.2.4 Example 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-512.2.5 Example 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6 Appendix A. Modbus Protocol A.1 Section Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1A.2 Modbus Protocol Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Appendix B. Modbus Interface Control Extensions B.1Section Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1B.2Point Group Attribute Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1B.2.1 Triggered Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1B.2.2 Non-Sorted Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2B.3 Command Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2B.3.1 Constant Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2B.3.2 Set Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3B.3.3 Delay Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
