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Process data transfer from remote OPC server

We have such requirement, some process data need to transfer from 80KM away company to our Aspen server and then go to DeltaV. We plan to use OPC to transfer data.

Our Aspen server is windows 2003. Remote site OPC server is windows 7. They both in each company's interanet. The remote company has fixed IP address internet connection, and the OPC server running well, I can use MatrikonOPC explorer check data on the remote OPC server.

We plan to use Aspen CIMIO to get data from remote OPC server.

So I have two questions. Any reply is appriciation.

1. What we need to set on computer, network, port?

2. Befor it, I am trying to use MatrikonOPC explorer or Tunneller in testing the connection. Can anyone help?

Thanks

Daniel Lou Qi

 

 

Daniel Qi Lou

qi lou

• 31 Jul 2015 11:39 AM
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5 Replies

• AdrianOffield

  

  • 1 Aug 2015 5:31 AM

  Hi Daniel,
  
  A bit more info, if Aspen server and remote site are on the clients intranet, are they both on the same subnet? If so then it shouldn't matter about internet connections, the intranet should be spanning both sites already. Do you know how this is achieved?

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• qi lou

  

  • 2 Aug 2015 2:04 AM

  In reply to AdrianOffield:

  Hi Adrian,
  
  The Aspen server and remote OPC server are not on the same intarnet, they are away 80 kilometers. So we must through internet to connect two ends intarnet computers.

  Daniel Qi Lou

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• AdrianOffield

  

  • 2 Aug 2015 4:51 AM

  In reply to qi lou:

  Distance isn't an issue, I have an intranet spanning 1000KMs. Given that OPC is not routable, you will need either a VPN type connection between the sites (which provides the ability for both nodes to be on the same network) or tunnelor. My only concern performing this across internet connections is one of latency, the internet is designed to be fault tolerant, thereby, resilient to failure but at the cost of latency, is OPC DA you only means of communication?
  
  What are you trying to do with this data? In my opinion I would be looking to buffer the data locally and have Aspen read the buffered data, something like OPC HDA interface rather than OPC DA. At least this way you can retrieve chunks of data without gaps that real-time data will suffer.

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• qi lou

  

  • 4 Aug 2015 2:07 PM

  In reply to AdrianOffield:

  Yes, using OPC DA. These data will going to DeltaV for alarm and monitoring. VPN is an option. Do you know other rather than VPN?

  Daniel Qi Lou

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• AdrianOffield

  

  • 8 Aug 2015 8:03 AM

  In reply to qi lou:

  On your first question you said you were reading data INTO Aspen from remote OPC server, but your last post suggest you are pushing data TO DeltaV, so depending upon what it is you are actually doing, depends on the optimal solutions. If you are using it for alarms on DeltaV you can use OPC DA providing you understand the latency issues and unreliability aspects of using an internet connection.
  
  As an alternative to using VPN you can use Matrikon tunneller application to provide a OPC pipe between to remote locations, I haven't done it across public IP's (very unsecure), but it works across expansive internal networks.
  
  Good luck.

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