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Title: OPC Server Connection Issue Post by: kstoddard on February 29, 2012, 08:16:39 PM I am using the Advanced Serial Data Logger and have it commuicating with our serial device on a desktop PC.
I have enabled the OPC Server and am seeing my data in the tags. Per the instructions I have also downloaded and installed the OPC Core Components Redistributable. The computer is on the network and pingable from my laptop. I installed the OPC Scada Viewer on my laptop and I'm trying to connect to the OPC Server but I'm getting the following error message: Unable to retrieve OPC servers list from the specified host [The RPC server is unavailable]. The client can't establish a connection with the remote server. Please check your firewall and security settings on the client and server. Everything with the firewall appears okay on both machines. I went as far as turning off the firewall on the desktop with the OPC Server running. I also tried connecting with the MatrikonOPCExplorer with no success either. Any help would be greatly appreciated. Title: Re: OPC Server Connection Issue Post by: Arthur Grasin on March 01, 2012, 08:40:42 AM You need to configure DCOM:
http://www.aggsoft.com/asdl-dcom-opc-config-1.htm Title: Re: OPC Server Connection Issue Post by: kstoddard on March 01, 2012, 07:51:12 PM Thanks for pointing me in the right direction.
I'm having a problem in section 4.2 Specifying OPC server properties. When I click on the DCOM Config folder I am getting some DCOM Configuration Warnings. And once I resolve them by recording several AppIds, the Test OPC Server object is not there to configure. The computer is running Windows Embedded Standard Service Pack 3. Is there something else I need to install beyond the OPC Core Components? Thanks. Title: Re: OPC Server Connection Issue Post by: Arthur Grasin on March 01, 2012, 09:36:52 PM You can start our Test OPC Server from the program folder as administrator and it will be registered automatically.
All necessary configuration steps are described in the tutorial. Title: Re: OPC Server Connection Issue Post by: kstoddard on March 02, 2012, 09:09:51 PM I'm now able to connect up to the OPC Server using the MatrikonOPC Explorer.
However when I try to add a tag to view it, I get the following error: asdlog.Instance.1 caused COM/OPC error 0x800706BA on IConnectionPoint.Advise() Error string: The RPC server is unavailable. Additional: Could not establish data callback connection on group '' Interface address is 0x00B2033C Vendor detail: AGG Software [http://www.aggsoft.com] Advanced Serial Data Logger OPC server The firewall has been completely disabled. Also for some reason on the OPC server 3.9.7.713 tab, there are no Active clients listed. Shouldn't I see my laptop there? Any ideas? Thanks again. |