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QuickOPC and Invensys DASSIDirect OPC Server

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30 Jan 2013 12:34 #1198 by support
Hello,
this is difficult to diagnose without having in reproduced locally. The OPC Automation DLL may use different parameters when instantiating the server. The problem comes to us from the OPC Server, we do not directly generate it.
I can see following "wild" guesses:

It can be inderectly caused by a security problem. Can you please check, comparing the working and non-working scenario, the user account under which the OPC server process, and possibly other relevant pieces are running? (from Task Manager). If they differ in user accounts, or if some processes don't appear at all, between the two scenarios, then this may be the clue to the problem.
There is a thread on OPC Foundation board www.opcfoundation.org/forum/vi... with similar issue. You can try (in the EasyOPC Options Utility) setting the allowed execution contexts for OPCEnum and for OPC Servers just to "Local server", and uncheck all the other options. The settings are on the "OPC-DA Globals" tab, under "Machine Parameters" and "Client Parameters" groups.

Just as a note, a guy with similar problem with Archestra (but a different server): www.plctalk.net/qanda/showthre... - but no solution there.
Best regards,

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30 Jan 2013 11:00 #1197 by Sandro@More
Sorry for missing attachment...
The pictures shown whats happens trying using QuickOPC VB6 client and Intouch application connected on DASSIDirect Server.

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30 Jan 2013 09:42 #1196 by support
Hello, can you please describe the details of your problem, or add the missing attachment?

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30 Jan 2013 09:38 #1195 by Sandro@More
Hi there,
is there anyone who has had experience with the DASSIDirect or DASABTCP (Invensys / Wonderware) OPC Server ?

As I describe in the attachement, the problem happen when I try to use the DASSIDirect together with the INTOUCH application.

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