Page 244 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

The third pilot light that I put is a special case for the PLC control system—the pilot light was placed such that the
temperature limit switch will turn it on.
Because of the third pilot light, the operator will know whether the PLC control system was turned OFF by another
operator, or it was the high temperature that turned the motor OFF.

Of course, there are limitless applications of these pilot lights in PLC automation or PLC control systems because
they are just plain handy.
However, you would not want everything in your system to be indicated by pilot lights, as they occupy an output
terminal at the PLC output side. The most important elements of the design must be considered first, namely, the
input and output devices.
Result: thus,demonstration various indicators on PLC modulesand interpret has been completed successfully.

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CITS : E & H - Electronics Mechanic - Exercise 180