Answer Posted / azad
The Main difference between PLC and DCS is SCAN CYCLE. PLC can able execute the instructions as one by one. whether DCS can make it as a page by page. So scanning time is reduced in DCS compare to PLCs.
Simply, If you have up to 10K I/O's you can go for PLC.
If You have more than that choose DCS.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.
key phaser where is use and work
Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...
how to calibrate and troubleshooting of leveltroll?
How u measure the massflow in orifice flow measurement techniques
what is the responsibility of an instrument commissioning supervisor
Differentiate between ultrasonic flowmeter and radar type flow meter
please send data bank of quetions answers on analytical instrumentation.
Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .
what is the procedure of O2 sensor(ABB) calibration?
Explain plc level and its type?
what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail
what is installation and commissioning of (fat & sat) of power plant dcs ? this question keeps in desirable conditions of one company .
defination of radial vibration?
What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus
