We need to read data into InSql from remoote OPCServers over dcom. Does InSql 8.0 support opc or we need to use a convertor like OPCLink?

Further OPC link does not recommend dcom. So what are the options if we want to stick to DCOM?

 

InSQL 8 is not a OPC client so you will need to use Wonderware's OPCLink or an alternative OPC-DDE server. With remote you have two options, one is to have OPCLink local to the InSQL server and use remote OPC, and the other is to install OPCLink at the OPC Server and use SuiteLink. I have used both ways, but check your OPC Server is able to be remote to the client.

It has been suggested that using suitelink over the network is preferred as to reduce the issues that DCOM can give.

Cheers,
Trevor Ousey

 

Hi Trevor,

When using OPC link to interact with remore opc servers, we are facing some problems.At some points, the status automatically becomes BAD for the OPC server in OPC link. Also when this happens, the OPC Server Status window of OPC link goes blank.But after sometime(from few minutes to hours) without doing anything, it starts working OK. We kept running a parallell Kepware opc client to confirm this behavior but found no problems with that. And OPC link help mentions that DCOM is NOT recommended. I dont trust DDE for fast acquisitions. So OPC link on each remote OPC Server PC with suitelink is the only option.

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