[foxboro] AIM* OPC server problem - summary
- From: "Fitzgerrell, Kevin" <Kevin_Fitzgerrell@xxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Wed, 31 Dec 2008 14:42:37 +0900
Hi all,
We've got our OPC server back on-line.
Initially we re-installed the OPC server on another workstation. We got
connections established to our AW51s, but still couldn't get the
Matrikon OPC Explorer to connect to this new local AIMOPC either,
however our error message was slightly different:
COM/OPC error 0x80070005 on CoCreateInstance()
Error String: Access is denied.
Additional: Could not connect to server 'AIM.OPC'
We followed Matrikon's "Establishing OPC Communication on Windows XP SP2
and Windows 2003 SP1" manual changing our COM and DCOM settings as per
the guide and our problem has gone away.
The Matrikon guidelines are similar to those in the "OPC Service Manual"
(sent to me by Ron Deen and also available on the Cassandra site), but
more extensive.
After getting the new OPC server running (and our APC back on-line) we
went back to the machine that failed initially and applied the COM/DCOM
settings. Also, our MIS group ran through the box and corrected some
virus inflicted problems. We probably changed more COM/DCOM settings
than really necessary as we've got a single box and no DCOM is involved
- at some point I may try to figure out exactly what changes were
necessary.
It looks like either an update this weekend tightened COM/DCOM security,
or a virus modified some of those settings.
Thanks to all who wrote with assistance!
Regards,
Kevin FitzGerrell
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Fitzgerrell, Kevin
Sent: Monday, December 29, 2008 4:00 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] AIM* OPC server problem
Hi all,
This weekend one of our AIM* OPC servers quit working. When we try to
view it with Matrikon's OPC Explorer we get a COM error message:
-----------------------------------------
Header:
An error was encountered while using COM services.
The error may indicate incorrect configuration.
If the problem persists, contact your system administrator.
Detail box:
COM/OPC error 0x80080005 on CoCreateInstance()
Error string: Server execution failed
Additional: Could not connect to server 'AIM.OPC'
-----------------------------------------
Any thoughts? Normally when we have OPC server problems we reboot the
OPC box and if that doesn't fix it reboot the AWs and the OPC box.
That's not fixing things this time.
Regards,
Kevin FitzGerrell
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