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I have installed "Plantstreamer 1.0 r2" software on standard system. Now I want to connect to DeltaV V 7.3 OPC system. Whenever I try OPC login, it is a success but I'm not able to establish a database connection. Has somebody done a similar thing before? Can somebody provide me with instruction manual for establishing this communication?
Further I would like to know of freely available OPC clients software which can connect with DeltaV OPC and fetch historian data.

Hi Topak,

What is the error message you get? Are you trying to connect on the same PC, different PCs, across separate domains?

Do you have an OPC License for the DeltaV, and which flavour of OPC are you using, DA or HDA, as you will need the appropriate type of client to connect?

Presumably you can browse to the OPC server on the DCS but cannot establish a connection - if this is the case investigate your access permissions with regard to the OPC server and the DCOM setup.

If it's DeltaV, have you created a local account on the OPC Client box that is set to DeltaV admin with appropriate password?

Try troubleshooting using some of the white papers from the OPC Training Institute or Software ToolBox.

For free trial OPC clients talk to the guys at Software ToolBox and Matrikon or download from their respective web sites.

Note if you want to fetch historian data from the DCS then you need to get your strategy right, i.e. nature of the historian, embedded PI or Emerson propriety. Do you want to pull historical data, i.e. from the data archive, or real-time data at/prior to entering the data archive? What are you proposing for compression settings? Choice of approach means you chose the appropriate OPC Client, i.e. DA or HDA.

Drop me a line if you would like to discuss in more depth.

Regards,

Burnikell
graham.burnikell at intuitive. uk. com

Plantstreamer is our open source solution that can be used to log plant data in a PosgreSQL database. So, you have to install a PostgreSQL instance (http://www.postgresql.org) if you want to store (and not only view) the data. To connect, you provide the IP address/domain name of the database host (the database can obviously be running on the same computer) and a database user name and password. Once the database connection is established, you will be able to start the data logging process.

Please contact plantstreamer-support (at) ciengis.com if you need any assistance. By the way, currently we have 1.0 rc5 on our site.

Regarding the access to data in a historian, I am not sure if you are referring to OPC HDA. Plantstreamer supports OPC DA only.

Best Regards,
Andrey Romanenko
www.ciengis.com

Plantstreamer uses OPC DA. MatrikonOPC's OPC Explorer (http://www.matrikonopc.com/products/opc-desktop-tools/opc-explorer.as px) uses OPC DA and can connect to DeltaV. You didn't mention whether you were connecting locally to the OPC Server or remotely.

In any case, you'll need to run your OPC Client as a user that has permissions to read from the DeltaV OPC Server. More info available at http://www.opcsupport.com