Data Communication preference

R

Thread Starter

Rashid

I am not an instrumentation engineer but and IT professional planning an installation of OSI PI historian server in a heterogeneous instrumentation, geographically separated locations.

On one location I have Delta-V DCS, Emerson FB-103 FloBoss and SAAB Radar Gauges. I am planning to have a Buffer Node at this location for collection of data from all instruments and communicate to PI server, installed at another location. This topology will avoid data loss in case of network or PI server failure but I want to be safe against failure of Buffer Node also.

I have OPC server with DCS and will use it for communication with buffer node. For FB-103 and SAAB radar gauges, I have option between using respective OPC servers (Matrikon for FB103 and Officelink for radar gauges) and just MODBus to Ethernet converter (much cheaper option).

Which of above is technically better option and why? Also, can OPC server communicate data of Buffer node failure period on its restoration?

Thanks in advance for help.
 
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Wassim Daoud

Hello Rashid,

OPC Server for FloBoss is a real-time data access server, therefore, it doesn't buffer data. You can use a product called OPC Buffer that can buffer the data for you: http://is.gd/f2C6U

Hope this is helpful

Cheers,
Wassim
 
I would prefer Modbus/TCP for communication (less overhead) and a SQL Database for buffering.

You could access the distributed SQL Databases from a central location.

Also have a look on our
http://pvbrowser.org
 
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