Answer / ibrahim s

This is nothing but SCADA(Supervisory Control And Data
Acquisition), this can used to monitor and control the
process variable along with PLC.

Answer / raj anu raj

As the name implies, like a supervisor who supervise his
subordinates functions and control over them.
Particularly in SCADA(supervisory control and data
aquisition)from HMI ie.. simply from monitor screen u can
supervise the various functions in the plant and also
control them by changing set points etc.. .Usualy SCADA
comprises of PLCS(functions as supervisor in auto), a
communication mode to receive data to and fro and a manual
interface ie.. for example graphics to communicate with
the PLC
Regards

Answer / khan

scada is abrreviated as supervisary control and data aqasition where the all data which monitered by the user is collected and aquared.the data can means what ever the set point acc to the program is can changed from it.
although the whole operation is monited by mmi man machine inteface first it send to the control unit then to the fild unit .

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