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Legacy Analyzer Systems and NeSSI

Existing analyser networks typically proprietary GC vendors primarily, recently adopted OPC Apply to only a fraction Rest use Cu wire NeSSI systems will rely on Fieldbus and Ethernet How do we get from dedicated hard wire and proprietary networks to multi-user links and open architecture?.

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Legacy Analyzer Systems and NeSSI

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  1. Existing analyser networks typically proprietary GC vendors primarily, recently adopted OPC Apply to only a fraction Rest use Cu wire NeSSI systems will rely on Fieldbus and Ethernet How do we get from dedicated hard wire and proprietary networks to multi-user links and open architecture? Legacy Analyzer Systems and NeSSI Today’s design CPAC Meeting - NeSSI Workshop 5 May 2005

  2. Multi-user communication paths means fiber optics and 100 MB/1GB Ethernet Difficult to justify installation by itself Implementation must be incremental (project by project) During transition there will be multiple user interfaces to the analyzers and their data Perseverance and clear eye on the goal is needed Multi-user conduit/open architecture Adding media converters and fiber optics to GC network CPAC Meeting - NeSSI Workshop 5 May 2005

  3. Future Analyzer Network CPAC Meeting - NeSSI Workshop 5 May 2005

  4. Network Checklist • Make friends with control systems personnel • They will be key to supporting your system. When’s the last time you configured a Cisco router? • Take a networking fundamentals course • Develop a network diagram for your existing system • Know that OPC servers don’t automatically know how to talk to each other • Consider using Analyzer OPC data specification developed by ExxonMobil • Get a Black Box catalog and skim through it. You’ll be a frequent user. • They make Class 1, Division 2 switches! • Find Fiber • Control systems will have fiber optic patch panels somewhere in the field • Sniff them out and draw them on a plot plan along with your shelters and individual analyzers • Work with the friend you made above to get a pair or more of the fibers assigned to your network • Switch your networks together • Depending on the location and number of networks you may want to add a switch in the field or in the control room. • Consider limitations on IP address space • You’ll need addresses, lots of them when the ANLAN is ready for the field. • Public addresses will be in short supply • Isolate your network from others for security reasons CPAC Meeting - NeSSI Workshop 5 May 2005

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