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Automating Manufacturing Systems - Process Control and ...

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plc states - 12.41<br />

state 3<br />

MCR<br />

reset button ??<br />

L<br />

state 1<br />

U<br />

state 3<br />

RES<br />

counter<br />

MCR<br />

c)<br />

S0 = ( S0 + S1( delay( 15) + thermal)<br />

)S0( buttonA + buttonB)<br />

S1 = ( S1 + S0( buttonA + buttonB)<br />

)S1( delay( 15) + thermal)S3( counter)<br />

S3 = ( S3 + S2( counter)<br />

)S3( reset)<br />

motor<br />

=<br />

S1<br />

light<br />

=<br />

S3

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