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Monday, January 23, 2017
The OPC Community Forum.
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The discussions that wouldn't end...
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Windows XP, Anyone?
Posted by Jake Brodsky on 20 June, 2002 - 11:47 am
Are you considering upgrading to XP despite the noxious End User License Agreement and higher prices?
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Where do we go from here?
Posted by Jeff Dean on 22 January, 2001 - 1:55 pm
I am concerned about a lack of advances in PC based HMI/SCADA. ...
55
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Open communications in the doldrums
Posted by Roger Irwin on 14 April, 2003 - 10:56 am
It is two years now that OPC/MIMOSA have kept us in the dark on thier imminent solve all XML standard. Out of the blue arrives a new kid on the block...........
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The fieldbus of the future
Posted by Miguel A. Serradet on 11 November, 1999 - 5:20 pm
(Originally posted Mon 10/19/1998) I think that USB (Universal Serial Bus) or something like that, will be the fieldbus for the future...
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connectivity (OPC)
Posted by Juan Carlos Orozco on 8 March, 2001 - 2:15 pm
Is there any OPC effort in GPL for Linux, because in my opinion this is a great way of taking this project to the factory floor. I am not saying that it is the only way, just that it is a good way. ...
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DO PLCs have OPC?
Posted by james fang on 22 May, 2002 - 4:42 pm
I have one question -- does PLC have OPC server (or client)?
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Linux Driver Standards (was BUSN: Blackout of 2003)
Posted by Greg Goodman on 13 October, 2003 - 9:16 am
What application interface standard would you like drivers on Linux to be written to? What standard interface for I/O modules does your Linux-based application support?
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ProfiNet or ProfiNot
Posted by Jim Stewart on 16 May, 2001 - 3:50 pm
Is this not the most contrived and glib attempt at "Industrial Ethernet" ever proposed?
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Free Modbus Driver in .Net
Posted by Stephen McLain on 29 January, 2009 - 7:22 pm
Looking for a free modbus driver that will work with .NET.
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What is an OPC server?
Posted by Satish Salankimatt on 22 February, 2004 - 11:52 am
What is an OPC server? Can anyone tell me about any website where I can get some reference material...
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OPC - Don't install Internet Explorer 6!
Posted by Mark Wells on 18 June, 2002 - 6:53 am
Don't install Internet Explorer v6 at this time. Many OPC "browsers", or programs that browse OPC items will stop working.
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Communication protocols - New events, was Communications protocols
Posted by Roger Irwin on 1 August, 2000 - 4:52 pm
After all I have said about idiocy of OPC's DCOM approach, I have just found out that MS have now officially abandoned COM technology in favour of their emerging .NET SOAP architecture. ...
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Large SCADA systems in the USA.
Posted by Rafael N. Jacomino on 9 February, 2007 - 1:06 am
Gauging size of large SCADA application within the USA automation market.
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[MAT-devel] Re: RTOSes, PLCs and control
Posted by Peter Wurmsdobler on 10 October, 2001 - 4:05 pm
Once such a protocoll is established, all suppliers, system integrators or other control entities can use it, suggest add-ons, etc. It would be open...
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XML in PLCs
Posted by James on 4 September, 2003 - 2:50 pm
What does everyone think about XML and PLCs. Is this the start of a brave new world of interoperability that we have waiting for?
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Logging from PLCs to SQL Databases - what options exist?
Posted by Nathan on 29 January, 2006 - 5:39 pm
I'm looking for all the ways that you can log data from PLCs to SQL databases...
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OPC and DOTNET
Posted by Per Thygesen on 15 February, 2001 - 12:34 pm
What is the future of the OPC specifications in the the light of Microsoft's new .Net initiative?
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Win NT based control system performance
Posted by Prem Sharma on 9 April, 2002 - 4:15 pm
Can NT be used reliably for a critical Data acquisition and control system?
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OPC-XML (was Difference Between OPC and DDE)
Posted by Lynn at Alist on 14 June, 2003 - 12:15 pm
I'm just curious. I remember when OPC came out, one of the big new "wonders" over DDE was that "it's binary, not ASCII"...
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How important is multivendor interoperability to you?
Posted by Thomas J. Burke on 16 September, 2009 - 9:13 am
Industry open standards versus vendor proprietary open. As the President of the OPC Foundation I'm trying to assess the importance of secure reliable interoperability, and the value proposition of interoperability from the end-user perspective.
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mayhem with newer technologies
Posted by Anand on 13 July, 2001 - 3:20 pm
Todays article on C-NET which I found interesting is "Wireless networks wide open to hackers" by Robert Lemos (Special to CNET News.com, July 12, 2001, 10:35 a.m. PT). If time permits, please visit the C-NET site and look at the article. I have put some points regarding problems in I&C with newer technologies ....
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DDE versus OPC performance benchmarks?
Posted by Warren Postma on 15 February, 2000 - 12:50 pm
I have been to the OPC Programmers Connection and the OPC Foundation, but what I can't find is any concrete examples of DDE's limitations.
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Connecting a production monitoring system
Posted by Michael Griffin on 24 November, 1999 - 10:35 am
I have a project I am working on for which I would like some advice. We are planning to implement a system which automatically monitors production equipment for values such as cycle time, down time, numbers and types of faults, etc. ...
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New "DCS" control system selection
Posted by George Whaley on 3 September, 2008 - 12:24 am
Requesting member feedback for the replacement selection of an existing petrochemical control system "DCS".
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OPC and VB
Posted by A.Alvestad on 4 September, 2000 - 5:48 am
How can I use OPC tags in VB
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OPC Server robustness
Posted by (TECO) David Bergeron on 25 February, 2000 - 2:10 pm
I would like the opinions of those on the list regarding the following OPC server issue. As far as I understand it, if an OPC client is connected to an OPC server and that client crashes or isn't shut down properly, the connection remains open in the OPC server. You can imagine tens of clients connected to one or more OPC servers crashing over time. Wouldn't these open connections load down the
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XML SCADA
Posted by Fredrik Högberg on 30 July, 2003 - 1:05 am
I'm having some thoughts on how a open source scada system could be built.
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Freelance DCS guys... friend or foe to DCS companies?
Posted by Baileyguy on 30 August, 2006 - 11:47 pm
Can freelance control specialists today survive in the industry today?
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Modbus RTU to Modbus TCP conversion
Posted by Kelly on 17 February, 2004 - 11:49 pm
How to connect a device to the ethernet, so that it could communicate with OPC servers that support Modbus TCP format?
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OPC client programming.
Posted by Mark Hutton on 19 January, 2002 - 2:41 pm
Anyone know of any good OPC resources? I am particularly interested in examples of VB, C++, Delphi and/or Java codee for connecting as a client to an OPC server...
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VB OPC client and network
Posted by boki on 28 January, 2002 - 1:48 pm
Using OPCDAAuto.dll to make an OPC-client in VB over LAN
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DELTAV
Posted by ING MOLINA on 4 August, 2005 - 11:35 am
DeltaV vs. Processlogix
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OPC Client in ASP.NET
Posted by Leonidas Kallis on 4 September, 2006 - 10:34 am
I'm thinking of using KEPServerEX OPC Server...
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OPC and Visual Basic 6
Posted by Javier Perez on 9 January, 2007 - 9:27 pm
Free VB6 code for programming an OPC client wanted.
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OPC interfacing for Infi90
Posted by sha on 2 February, 2009 - 4:08 pm
Infi90 basics
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How to write PLC using PHP
Posted by Joash Sebastian on 10 February, 2010 - 6:54 am
How to write value to PLC using PHP script (web)
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Drivers -- SNMP to OPC gateway ??
Posted by Hullsiek, William on 5 May, 2000 - 12:19 pm
Was wondering if anyone knows of a SNMP to OPC gateway, so I can display network management points on iFIX ?? I am also looking at polling points from: -Casi-Rusco security system -Novar HVAC system
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Java to Ethernet IP
Posted by Jon P on 6 August, 2008 - 12:06 am
Controls Engineer is seeking a way to talk to Allen Bradley and other Ethernet IP devices using Java.
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Trend graph on Excel data
Posted by Rudi on 5 January, 2010 - 8:37 am
Need to do ad-hoc calculations on OPC HDA data and show the results in a trend.
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Integrating MODBUS Devices with Allen-Bradley PanelView Plus FactoryTalk View without Kepware
Posted by vmakwana on 7 December, 2015 - 12:55 pm
What's the best way to integrate Modbus devices with A-B PanelViewPlus FactoryTalk View without Kepware?