Design a STOP $/$ START circuit for a large air extractor fan motor.$$

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Requirements are as follows: Use a simulator, Open the I$/$O simulator from simulation option, write the PLC program, put the simulator in run mode, use the I$/$O simulator contacts and check the function of the ladder logic.

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$1.$ Use the first two push$-$buttons at the top of the I$/$O simulator to run the motor $($i$.$e$.$ both N$/$O for START & STOP$).$

$2.$ When stopped, the motor may not be started again for $10$ seconds.$($Motor needs to cool down, before it is allowed to run again$).$

$3.$ After $5$ starts, the motor may not be allowed to start again for a sixth time.$($In industry, a motor must be stopped after $100$ or whatever operations, so that it can be subject to engineering maintenance$).$

$4.$ A flashing light must come on$,$ whilst the motor is running in its fifth $($and last$)$ operation, to indicate that the motor service is due for a service as soon as it stops.

$5.$ Once the motor has stopped after the fifth time, the flashing light must only be constantly on $($i$.$e$.$ no flashing operation$).$ This indicates that the motor will not start again, until the maintenance has been conducted and completed.

$$ After engineering maintenance is performed, the electrician must switch a key$-$switch on and off $($e$.$g$.$ bottom switch of the simulator$),$ to reset the motor, and allow it to operate from the beginning