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<== Date ==> <== Thread ==>

Subject: review the 2nd Public Working Draft of the pvAccess protocol specification
From: "Dalesio, Leo" <dalesio@bnl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Wed, 13 Jun 2012 14:16:57 +0000
Dear Colleagues,

I would like to thank everyone for the support leading up to this second draft. We would greatly appreciate your further suppport

The EPICS V4 Working Group would like to invite you to review the 2nd Public Working Draft of the pvAccess protocol specification. PvAccess is a high-performance network communication protocol for signal monitoring and scientific data services interconnect. It is designed to support the structured data types of the EPICS V4 "shared memory" data exchange system, called pvData, for optimized interoperability of control system endpoints. Primary features include unsigned integer support, channel arguments, and delta encoding. It is a successor of EPICS Channel Access, and is the wire protocol at the heart of EPICS V4. Please find the specification at: http://epics-pvdata.sourceforge.net/pvAccess_Protocol_Specification.html [1] Please address comments on the specification to the EPICS V4 Working Group mailing list, epics-pvdata-devel@... [4] Java and C++ reference implementations of pvAccess are available [5][6]. Other implementations in these or other language bindings are welcome. EPICS V4 is presently in BETA. Version 1.0.1 may be downloaded from [5]. References [1] pvAccess Protocol Specification, http://epics-pvdata.sourceforge.net/pvAccess_Protocol_Specification.html [2] The EPICS V4 homepage, http://epics-pvdata.sourceforge.net/ [3] Documentation page, http://epics-pvdata.sourceforge.net/literature.html [4] EPICS V4 mailing list, https://lists.sourceforge.net/lists/listinfo/epics-pvdata-devel [5] EPICS V4 download site, http://sourceforge.net/projects/epics-pvdata/files/ [6] Source code, java http://epics-pvdata.hg.sourceforge.net/hgweb/epics-pvdata/pvAccessJava/, C++ http://epics-pvdata.hg.sourceforge.net/hgweb/epics-pvdata/pvAccessCPP/ NOTE: Due to continuing implementation development, at present the Hg tip for C++ should NOT be used. See instead the tagged releases, eg 1.1-BETA. and the files on the download site [4].

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