1 SEMI E5-0709 © SEMI 1982, 2009
SEMI E5-0709
SEMI EQUIPMENT COMMUNICATIONS STANDARD 2 MESSAGE
CONTENT (SECS-II)
This standard was technically approved by the global Information & Control Committee. This edition was
approved for publication by the global Audits and Reviews Subcommittee on May 13, 2009. It was available
at www.semi.org in June 2009 and on CD-ROM in July 2009. Originally published 1982; previously
published November 2008.
NOTICE: The user’s attention is called to the possibility that some implementations of this standard, particularly
those related to the use of Stream 4, may involve the use of inventions covered by U.S. patents 4,884,674 and
5,216,613, and by other patents issued or pending, held by Texas Instruments Incorporated. By publication of this
standard, SEMI takes no position respecting either the applicability or the validity of these or other patent rights
asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that
determination of any such patent rights and the risk of infringement of such rights, are entirely their own
responsibility.
Table of Contents
1 Purpose .......................................................................................................................................................................3
2 Scope ..........................................................................................................................................................................3
3 Limitations..................................................................................................................................................................3
4 Referenced Standards and Documents .......................................................................................................................3
5 Terminology ...............................................................................................................................................................4
6 The Message Transfer Protocol..................................................................................................................................5
6.1 Intent....................................................................................................................................................................5
6.2 Message...............................................................................................................................................................5
6.3 Blocking Requirements........................................................................................................................................5
6.4 Message Header ..................................................................................................................................................5
6.5 Transaction Timeout............................................................................................................................................5
6.6 Multiple Open Transactions ................................................................................................................................6
7 Streams and Functions................................................................................................................................................6
7.1 Streams................................................................................................................................................................6
7.2 Functions.............................................................................................................................................................6
7.3 Stream and Function Allocation..........................................................................................................................6
8 Transaction and Conversation Protocols ....................................................................................................................7
8.1 Intent....................................................................................................................................................................7
8.2 Transaction Definition.........................................................................................................................................7
8.3 Transaction Level Requirements .........................................................................................................................7
8.4 Conversation Protocols.......................................................................................................................................7
9 Data Structures ...........................................................................................................................................................8
9.1 Intent....................................................................................................................................................................8
9.2 Item......................................................................................................................................................................8
9.3 List.......................................................................................................................................................................9
9.4 Localized Character String Items........................................................................................................................9
9.5 Example Data Structures...................................................................................................................................10
9.6 Data Item Dictionary.........................................................................................................................................11
9.7 Variable Item Dictionary...................................................................................................................................53
9.8 Object Dictionary ..............................................................................................................................................62
10 Message Detail .......................................................................................................................................................72
10.1 Intent................................................................................................................................................................72
10.3 Message Usage. ...............................................................................................................................................73
10.4 Stream 0 and Function 0..................................................................................................................................73
10.5 Stream 1 Equipment Status..............................................................................................................................73
10.6 Stream 2 Equipment Control and Diagnostics ................................................................................................80
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