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RAJ KUMAR
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Join Date: Aug 2008
Posts: 56

DCS

11/28/2008 11:37 PM

Dear All

Can anybody tell me purpose of EXAOPC Server in DCS System?

and what is the difference in the V-net and VL-net networks?
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jcchiefeng
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United States - Member - US Citizen - Born & Raised Engineering Fields - Control Engineering - HVAC/R Simplified Using PLC Controls Engineering Fields - Instrumentation Engineering - HVAC/R Simplified Using PLC Controls Engineering Fields - Energy Engineering - HVAC/R Simplified Using PLC Controls

Join Date: Mar 2007
Location: Brick, NJ (USA)
Posts: 110
Good Answers: 5
#1

Re: DCS

11/29/2008 12:21 PM

Raj- Here are a few links for you for the layout of Yokogawa's Exaopc Server process and batch control systems.

A question to you, are you not the Raj Kumar from AVG?

http://www.zimmerliag.com/htm/automatisierung/downloads/automatisierung/opc/exa_opc_gs36j02a10-01e_011.pdf

http://www.zimmerliag.com/htm/automatisierung/downloads/automatisierung/adv_process_control/exa/exa_rqe_gs36j06d20-01e_001.pdf

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andrew_ward
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Join Date: Jun 2008
Location: Brick, NJ
Posts: 71
Good Answers: 8
#3
In reply to #1

Re: DCS

11/30/2008 7:30 AM

Hey JC, it's good to see another person here from Brick!

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jcchiefeng
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United States - Member - US Citizen - Born & Raised Engineering Fields - Control Engineering - HVAC/R Simplified Using PLC Controls Engineering Fields - Instrumentation Engineering - HVAC/R Simplified Using PLC Controls Engineering Fields - Energy Engineering - HVAC/R Simplified Using PLC Controls

Join Date: Mar 2007
Location: Brick, NJ (USA)
Posts: 110
Good Answers: 5
#4
In reply to #3

Re: DCS

12/01/2008 8:23 PM

Just figured out that you sent me a personal note. Yes, here in Brick burning the candle at both ends. Holding down a full time job and starting a new business.

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RAJ KUMAR
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Join Date: Aug 2008
Posts: 56
#5
In reply to #1

Re: DCS

12/02/2008 6:10 AM

No i am not that raj. Links were really usefull.
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andrew_ward
Commentator

Join Date: Jun 2008
Location: Brick, NJ
Posts: 71
Good Answers: 8
#2

Re: DCS

11/30/2008 7:29 AM

The V-Net vs. vL-Net question came up on control.com two years ago, here was an answer. http://www.control.com/thread/1026228379. The bottom line is that the protocol is the same, but V-Net is run over thicknet and L-Net is run over thinnet.

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chandram
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Join Date: Dec 2008
Location: Live near Mumbai - Instrumentation professional - Work in maintenance function and Quality/TQM
Posts: 5
#6

Re: DCS

12/10/2008 3:39 AM

EXAOPC is an OPC server running on a windows. This open standard is developed by OLE for process control (OPC) for interfacing with optimization software packages running on a separate client PC. This would help in reading information from DCS and writing back (such as set points) to controllers in DCS such as Yokogawa CS3000.

If you have CS3000 system, EXA OPC interface package (LHS2411) comes as a standard package along with standard operation & monitoring software - LHS1100
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Users who posted comments:

andrew_ward (2); chandram (1); jcchiefeng (2); RAJ KUMAR (1)

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