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Question
What is the difference between HMI and MMI?
 Question Submitted By :: Instrumentation
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
There is no difference between HMI and MMI.
MMI stands for Man Machine interface.
HMI stands for Human Machine Interface.
Then there will rise a question why there are two terms.
In the ewarlier days only men used to work in any control
room. But now a days womwn are also working in all Controll
rooms.Hence the word HMI has been ome in usage.Just to
avoid any doubt that in control both men and women can work.
 
Is This Answer Correct ?    42 Yes 4 No
M.ramtarkam
 
Answer
# 2
MMI = Man Machine Interface.

then the lady(operators, engineer, etc) is not happy
therefore it is change to

HMI = Human Machine Interface...

just joking...
 
Is This Answer Correct ?    45 Yes 13 No
Wilson
 
 
 
Answer
# 3
HMI- Human Machine Interaction
MMI-Man Machine Interface
 
Is This Answer Correct ?    8 Yes 5 No
Rambhajan
 
Answer
# 4
There is no difference between MMI & HMI 
Is This Answer Correct ?    1 Yes 0 No
Hmmmi
 
Answer
# 5
MMI is a open loop control & HMI can be accessed both in Open/close loop control. 
Is This Answer Correct ?    1 Yes 1 No
Jagath
 
Answer
# 6
in mmi switches or buttons are used so man operate it
mostly thats why it is called mmi
in hmi touch pannel is used which is operated by man or
woman thats why it is called hmi.....
 
Is This Answer Correct ?    0 Yes 0 No
Mohit Kumar
 
Answer
# 7
Answer no 5 seems to be correct with answer no 3. Intially
the machine interfaces are having limited capabilities and
then enhanced to higher levels. So answwer no 3 may be
taken as correct and while renaming while tech advancing
Answer no 5 must have been considered.

There was an another term calleed GUS: Global User Staion
honeywell systems.
But HMI stands dominating. MMI (favour towards men), GUs
(not specific for machine interface)

This is what I belive.
 
Is This Answer Correct ?    4 Yes 5 No
M.v.ramesh
 
Answer
# 8
Initially it is MMI and then beacuse of several reasons it
is changed to HMI. Functionally there is no change.
 
Is This Answer Correct ?    16 Yes 18 No
Sunthosh080
 
Answer
# 9
1- MMI is considered as a small display on a panel at field.
2- HMI is an entire control station installed at field.
 
Is This Answer Correct ?    7 Yes 12 No
Wesam
 
Answer
# 10
MMI doesnt have any I/O points.
HMI has I/O points also like a PLC.
 
Is This Answer Correct ?    0 Yes 6 No
Sunita
 

 
 
 
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