Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between HMI,SCADA and MMI,not
abbrevation?
- 7 Answers
- 40094 Views
- HCL, I also Faced
- E-Mail Answers
Answer Posted / parag pathak
First about HMI and MMI:
MMI- Man Machine Interface
HMI- Human Machine Interface
Initailly MMI layer was name given to computers of Control
room to intrface (to view, to modify, to log data) with DCS
system. Later on even ladies started working in process and
control room so they change to Human Machine Interface. HMI
layer consists of many operator consoles and an engineering
console
About SCADA:
SCADA is Supervisory Control amd Data Aquization.. This is
a vendor made program usually for PLC. Initially PLC was
made for dedicated package (AI, DI and DO ) but later on it
was started using for Contols, so it was required to
modify, log the data in the computer so each vendor develop
software compatible with PLC hardware which gives facility
for operator to watch, control and save history of the
process parameters
| Is This Answer Correct ? | 11 Yes | 0 No |
Post New Answer View All Answers
How we can check the 2 wire proxy switch? & how it is connected to DI MODULE OF PLC?
Why ac supply load cell is used? Can we use the dc supply load cell?
1. For Steam drum level signal, why do we compensate with drum pressure signal? 2.For main steam Flow signal is comensated with main steam temperature signal and main steam pressure signal why?
what is the process to make control schematic ?
I have got a call of IOCL interview for projects having 2yrs experience. What sort of questions should I expect in the interview?
centrifugal compressor interlock? Tell me the parameter at which compressor will trip
Turbidity analyzer working principle ?
What are the types of valves?
how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
What are different types of orifice plates?
Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com
Explain signal isolator
what is zero and span ?
1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.
key phaser where is use and work
