why the SCAN time of DCS is more & that of PLC is less?
if the SCAN time of DCS then why we use DCS.
Answer Posted / kyle condran
DCS are not PC based. the configuration and operating software are but the actual control happens in a control module. DCS usually have a fixed scan time 50ms+, but not always, regardless of I/O count or program size.
PLC scan time depends on Program size and I/O used in the program.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What are the charcterstics of a P&ID controller block for Governor speed raise or lower for a load sharing functionality between 4 Gas turbines in droop mode.
Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...
How to calibrate Field bus transmitter? procedure ?
What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?
How to convert Differential pressure to flow in TPH
how do u calibrate the vacuum transmitter if it shows more reading
what is the input to be given in digital flow meter during the the calibration time?
Why we are using reverse action in displacer types level transmitters on some Vessels?
typical loop drawing of a simple feedback control comprising of one transmitter and one control
How would you choose differential range?
sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
How to calibration a control valve?
Conversions
what is span value and zero ? and how set ?