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ÈÍÈÖÈÀËÈÇÀÖÈß ÑÎÑÒÎßÍÈß ØÀÃÀ
STL-ÈÍÑÒÐÓÊÖÈÈ
5.3
ÏÐÈÌÅÐ
ÈÍÈÖÈÀËÈÇÀÖÈß ÑÎÑÒÎßÍÈß ØÀÃÀ
Êàæäîå ñîñòîÿíèå øàãà òðåáóåò èíèöèàëèçàöèè. Äëÿ ýòîãî èìåþòñÿ, íàïðèìåð,
èíèöèàëèçèðóþùèå îïåðàíäû S0...S9. Ñ ïîìîùüþ èíèöèàëèçèðóþùèõ îïåðàíäîâ ìîæíî
âûïîëíèòü ðàçëè÷íûå øàãè ïðîöåññîâ âíóòðè STL-ïðîãðàììû, ÷òîáû ðåàëèçîâàòü, íàïðèìåð,
ðàçíûå ïðîöåññû ðàáîòû (íàëàäî÷íûé è àâòîìàòè÷åñêèé ðåæèìû, ïîäõîä ê íóëåâîé òî÷êå
è.ò.ä.).
Èíèöèàëèçàöèÿ øàãîâûõ ñîñòîÿíèé
M8002
OUT
S0
X0
S 20
X1
S 21
X2
S 22
X3
S 23
X4
0 LD M 8002
1 SET S 0
3 STL S 0
4 LD X 0
5 SET S 20
7 STL S 20
8 OUT Y 1
Y1
9 LD X 1
10 SET S 21
12 STL S 21
13 OUT Y 2
Y2
14 LD X 2
15 SET S 22
17 STL S 22
18 OUT Y 3
19 LD X 3
Y3
20 SET S 23
22 STL S 23
23 OUT Y 4
24 LD X 4
Y4
25 OUT S 0
27 RET
28 END
Ðèñ.5-11. Ïðèìåð ïðîãðàììèðîâàíèÿ èíèöèàëèçàöèè øàãîâûõ ñîñòîÿíèé
C000140C
Ìåðêåð Ì8002 çàäåéñòâóåò ïðè âêëþ÷åíèè ÏÊ îïðåäåëåííîå ñèñòåìíîå ñîñòîÿíèå (ñì.òàêæå
ðàçäåë 10.1.1). Èíèöèàëèçàöèÿ øàãîâîé öåïè îïðåäåëèòñÿ âêëþ÷åíèåì S0.
Óñëîâèÿ øàãîâ äëÿ êàæäîãî ïîñëåäóþùåãî øàãà âûïîëíÿþòñÿ óæå îïèñàííûì ñïîñîáîì.
×òîáû îñóùåñòâèòü íîâûé ïóñê èëè ïîâòîðåíèå øàãîâîé öåïè, ñíîâà äîëæåí âêëþ÷èòüñÿ S0.Ħ
5 – 10
MITSUBISHI ELECTRIC