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Automating Manufacturing Systems - Process Control and ...

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plc sfc - 20.19<br />

2.<br />

Start<br />

EW crosswalk button<br />

NO EW crosswalk button<br />

red NS, green EW<br />

walk light on for 10s<br />

24s delay<br />

16s delay<br />

red NS, green EW<br />

red NS, yellow EW<br />

4s delay<br />

EW crosswalk button<br />

NO EW crosswalk button<br />

red NS, green EW<br />

walk light on for 10s<br />

24s delay<br />

16s delay<br />

red NS, green EW<br />

red NS, yellow EW<br />

4s delay

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