How to check the SCAN time of DCS ,n dont give therotical
answers .How to check the SCAN time of DCS during FAT?
Answers were Sorted based on User's Feedback
Answer / rajkumar
If you are using a DCS (Distributed Control System), there
should be a diagnostic utility that you can run (this is
usually part of the system software). If your sotware scan
is structured correctly i.e. all software is called in
cyclic scans and not free scans, the utility should be able
to tell you the loading of these scan cycles.
You should also be aware that you are doing this under FAT
conditions. This would imply that most of your IO are not
connected, which in turn would push up your scan times for
all the diagnostic alarms comming in.
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / rnm
In my opnoin, Sacn time checking during FAT shall be input
simulation with one repeater block. Then go for cycle sacn
rate check, which will cover input,process block(PID) and
output. We know, there wiil be no O/P connected in field
and no much execution of loops. In this case, very
difficult to conclude this time.Better to check I/O
scanning rate.
Is This Answer Correct ? | 0 Yes | 0 No |
Hi Friends i am going to write BARC written test by this month 20th (20-5-2008). So please if any body knows the details about this or having previous question papers pls mail me to kkumarei@gmail.com. For Suggestions give one message to 9962122264
how can calibrate pressure transmeeter in the feild ?
what is the difference between auto tuning and manual tuning of controllers(eg:PID,PI,PD CONTROLLERS )
How is SmartPlant Instrumentation related to INtools?
If i want use the 6 kg/cm2 pressure gauge then how to calculate its pressure gauge range?
can you send remote seal interface level transmitter calculation steps for oil water saperator.
0 Answers Sasol Firm, Thermax,
How d.p. Transmitter can be applied to open tank?
PID controller is used for which type of compensation…… a) lead comp. b) lag com. c) lead lag com.
12 Answers Engineers India Limited,
A differential pressure transmitter is configured to measure the height of an open tank : height 10m and dia 5m. Suppose this same transmitter is shifted to another open tank : height 10m and dia 4m. What will be the %error in measurement? how?
difference b\w a transducer and a sensor
can u guys tell me why we are using sheild in junction bos wiring ~! ?
what master plc do?