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- January 3rd, 2003 - added the parameter UPDATE_RATE, value arrays.
- January 23rd, 2004 – revised parameters group/item, error reports, and DCOM.
- November 22nd, 2005 - new protocol parameters implemented.
- October 10th, 2007 - parameters of protocol Async I/O 3.0 update
- December 3rd, 2007 - added the information about destination column
- March , 2009 - added the support of HDA
- February , 2010 - OPC Item browsing
- March , 2013 - tell commands
- July 2021 - added support for working with 64-bit INT / UINT
Document revisions
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- Ver. 1.0 – February 9th, 2000
- Ver. 1.1 - January 3rd, 2002
- Ver. 1.2 - January 23rd, 2004
- Ver. 1.3 - November 22nd, 2005
- Ver. 1.4 - October 10th, 2007
- Ver. 1.5 - December 3rd, 2007
- Ver. 1.6 - March 13th, 2009
- Ver. 1.7 - February 8th, 2010
- Ver. 1.8 - March 5th, 2013
- Ver. 1.í - July 16th, 2021
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{"serverDuration": 204, "requestCorrelationId": "d3286814ecaa4d22"}