1、 PUBLICLY AVAILABLE SPECIFICATION IEC PAS 62408 First edition2005-06 Real-time Ethernet Powerlink(EPL)Reference number IEC/PAS 62408:2005(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 al
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7、Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALO
8、REFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PUBLICLY AVAILABLE SPECIFICATIONIEC PAS 62408 First edition2005-06 Real-time Ethernet Powerlink(EPL)PRICE CODE IEC 2005 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by an
9、y means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec
10、.ch XM For price,see current catalogue Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 PAS 62408 IEC:2005(E)CONTENT FOREWORD.14 1 General.15 1.1 Scop
11、e and general description.15 1.1.1 Slot Communication Network Management(SCNM).15 1.1.2 EPL key features.16 1.1.3 Integration.17 1.1.4 Modular Machines.18 1.2 Normative references.19 1.3 Definitions and Abbreviations.20 1.3.1 Definitions.20 1.3.2 Abbreviations.23 2 Modelling.24 2.1 Reference Model.2
12、4 2.1.1 Application Layer.24 2.1.1.1 Service Primitives.25 2.1.1.2 Application Layer Service Types.25 2.2 Device Model.26 2.2.1 General.26 2.2.2 The Object Dictionary.27 2.2.2.1 Index and Sub-Index Usage.28 2.3 Communication Model.28 2.3.1 Master/Slave relationship.28 2.3.2 Client/Server relationshi
13、p.29 2.3.3 Producer/Consumer relationship-Push/Pull model.30 2.3.4 Superimposing of Communication Relationships.30 3 Physical Layer.31 3.1 Topology.31 3.1.1 Hubs.31 3.1.2 Switches.31 3.2 Network Guidelines.31 3.3 Connectors.32 3.3.1 RJ-45.32 3.3.2 M12.32 3.3.3 Cross Over Pin Assignment.33 3.3.3.1 RJ
14、45 to RJ45.33 3.3.3.2 M12 to M12.34 3.3.3.3 M12 to RJ45.34 3.4 Cables(recommendation).34 4 Data Link Layer.35 4.1 Modes of Operation.35 4.2 EPL Mode.35 4.2.1 Introduction.35 4.2.2 EPL Nodes.35 4.2.2.1 EPL Managing Node.35 4.2.2.2 EPL Controlled Node.36 4.2.2.2.1 Isochronous CN.36 4.2.2.2.2 Async-onl
15、y CN.36 4.2.3 Services.36 4.2.4 EPL Cycle.36 4.2.4.1 Isochronous EPL Cycle.36 4.2.4.1.1 Start period.37 4.2.4.1.2 Isochronous period.37 4.2.4.1.2.1 Multiplexed Timeslots.38 4.2.4.1.3 Asynchronous period.38 4.2.4.1.3.1 Asynchronous Scheduling.39 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL
16、 USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.PAS 62408 IEC:2005(E)3 4.2.4.1.3.2 Asynchronous Transmit Priorities.40 4.2.4.1.3.3 Distribution of the Asynchronous period.40 4.2.4.1.4 Idle Period.40 4.2.4.2 Reduced EPL Cycle.40 4.2.4.3 EPL CN Cycle State Machine.41 4.2.4.3.1 Overview.41 4.2.4.3.2 States.41 4.2.4.3.3 Events.41 4.2.4.3.4 Usage of the the NMT_CS state by the DLL_CS.42 4.2.4.3.4.1 State NMT_CS_OPERATIONAL,NMT_CS_PRE_OPERATIONAL_2,NMT_CS_READY_TO_OPERATE.42 4.2.4.3.4.1.1 Tr
