Answer / praveen kumar paulraj

PLC based process automation panels. which is nothing but
control system which uses PLC .the same process can be
controlled by other control systems, but, why by PLC because
in PLC we can write the logic by ladder diagrams,so that the
electrical engineer can understand the logic and, he can
easily re-program the logic in side the plc because the
ladder logic is just like wiring diagram.

Answer / prvn

the control system which uses PLC is called PLC Based
control system .why PLC because we write ladder logic in plc
. it is invented for electrical engineers ladder logic
diagram is as same as relay logic diagram so they can
understand the logic inside the PLC. we can control system
also other means

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