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Ââåäåíèå â STEP 7 Lite A5E00142300-01
Îïèñàíèå ãðóïï ôóíêöèé (ñôåð
ïðèìåíåíèÿ):
Ðàçáåéòå ïðîöåññ íà ñâÿçàííûå
ãðóïïû.
Îïðåäåëèòå ýëåìåíòû,
êîíòðîëèðóþùèå ýòè ãðóïïû.
Îïðåäåëèòå ýëåêòðè÷åñêèå,
ìåõàíè÷åñêèå è ëîãè÷åñêèå
âõîäû/âûõîäû äëÿ âñåõ çàäà÷.
Îïðåäåëèòå áëîêèðîâêè è
çàâèñèìîñòè ìåæäó çàäà÷àìè.
Îïðåäåëèòå òðåáîâàíèÿ ê
áåçîïàñíîñòè:
 íàøåì ïðèìåðå, äëÿ ýòîãî
ïðåäíàçíà÷åí êîíòóð àâàðèéíîãî
âûêëþ÷åíèÿ (emergency off). Îäíàêî
ïðîãðàììèðîâàíèå ýòîé çàäà÷è
áîëåå ñëîæíîå, ÷åì ïðåäóñìîòðåíî â
íàøåì ïðèìåðå.
Îïðåäåëèòå ýëåìåíòû óïðàâëåíèÿ è
èíäèêàöèè:
Äëÿ êàæäîãî ïðîöåññà òðåáóåòñÿ
ñèñòåìó óïðàâëåíèÿ è êîíòðîëÿ,
êîòîðûå ïîçâîëÿþò îïåðàòîðó
óïðàâëÿòü ïðîöåññîì.
Îïðåäåëèòå âõîäû/âûõîäû:
Äàæå â ýòîì íåáîëüøîì ïðèìåðå
âàì íåîáõîäèìî òðè ôèçè÷åñêèõ
Inputs [Âõîäà] è Outputs [Âûõîäà] äëÿ
áåíçèíîâîãî äâèãàòåëÿ PE [Petrol
Engine].
 òàáëèöå ñèìâîëîâ, â ãëàâå 5,
äàåòñÿ ïîëíûé îáçîð âñåõ
âõîäîâ/âûõîäîâ.
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Ãðóïïû ôóíêöèé Çàâèñèìûå óñòðîéñòâà
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Ãðóïïû ôóíêöèé A = Áåíçèíîâûé äâèãàòåëü
= Òàõîìåòð
= Âåíòèëÿòîð
Ãðóïïû ôóíêöèé B = Äèçåëüíûé äâèãàòåëü
= Òàõîìåòð
= Âåíòèëÿòîð
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