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Automating Manufacturing Systems - Process Control and ...

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plc sfc - 20.14<br />

ST7<br />

reset button<br />

TR13<br />

ST2<br />

automatic button<br />

TR8<br />

ST6<br />

part not detected<br />

TR15<br />

ST3<br />

part detect<br />

TR10<br />

ST4<br />

bottom limit<br />

TR11<br />

ST4<br />

stop button<br />

TR12<br />

ST5<br />

top limit<br />

TR14<br />

Figure 20.12<br />

Ladder logic for transitions

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