What is the difference between HMI,SCADA and MMI,not
abbrevation?
- 7 Answers
- 37204 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
Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.
Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?
Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.
How to work temperature gauge?
What is Span Error
Which types of quections asked in interview for FORMULATION PLANT (PHARMA)
when a magnet is heated?
Explain the use of hair spring in the pressure gauge.
There are many type of control cable like pair,core,tried, What are defination each one
I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.
what is exact time to study dcs and plc cources
What is 3 element control system
How works weighfeeders in cement industry? what is the working principle?
Describe the typical instrumentation used in monitoring the performance of a shell and tube heat exchanger.
Which tank weighing system is better to install (Accuracy point of view) 1) Tank weighing system with 3 load cell or 2) Tank weighing system with 4 Load cell
