codesys 甯哥敤璇�娉曞垎浜�

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1. 璧嬪�兼寚浠�
鍙橀噺 := 鍙橀噺鎴栬〃杈惧紡
鎰忎箟锛氭搷浣滅�︹��:=鈥濆彸杈瑰彉閲忔垨琛ㄨ揪寮忕殑鍊艰��璧嬬粰浜嗗乏杈圭殑鍙橀噺
渚嬪�傦細 Var2:=Var1*10;
璇ヨ��鍙ユ妸Var1鐨勫�间箻浠�10锛屽啀灏嗗緱鍒扮殑缁撴灉璧嬪�肩粰Var2銆�
2 IF鎸囦护
浣跨敤IF鎸囦护鍙�浠ユ��鏌ユ潯浠讹紝骞舵牴鎹�姝ゆ潯浠舵墽琛岀浉搴旂殑鎸囦护銆�
甯歌�佺殑IF鎸囦护缁撴瀯鏈夛細
(1) IF 鏉′欢A THEN
琛ㄨ揪寮廇;
END_IF
褰撴潯浠禔婊¤冻鏃讹紝鎵ц�岃〃杈惧紡A銆�
渚嬪�傦細
IF temp<17
THEN heating_on := TRUE;
END_IF
褰撴俯搴﹂檷鍒�17搴︿互涓嬫椂锛屽紑鍚�鍔犵儹鍣ㄣ��

(2) IF 鏉′欢A THEN
琛ㄨ揪寮廇;
ELSE
琛ㄨ揪寮廈;
END_IF
褰撴潯浠禔婊¤冻鏃讹紝鎵ц�岃〃杈惧紡A锛涘惁鍒欙紝鎵ц�岃〃杈惧紡B銆�
渚嬪�傦細
IF temp<17
THEN heating_on := TRUE;
ELSE heating_on := FALSE;
END_IF;
褰撴俯搴﹂檷鍒�17搴︿互涓嬫椂锛屽紑鍚�鍔犵儹鍣�, 鍚﹀垯鍔犵儹鍣ㄤ繚鎸佸叧闂�銆�

锛� 3锛� IF 鏉′欢A THEN 琛ㄨ揪寮廇锛�
ELSIF 鏉′欢B THEN 琛ㄨ揪寮廈锛�
...
ELSIF 鏉′欢N-1 THEN 琛ㄨ揪寮廚-1锛�
ELSE 琛ㄨ揪寮廚锛�
END_IF
褰撴潯浠禔婊¤冻鏃讹紝鎵ц�岃〃杈惧紡A锛涘惁鍒欙紝褰撴潯浠禕婊¤冻鏃讹紝鎵ц�岃〃杈惧紡B锛� 鈥﹀惁鍒欙紝褰�(鏉′欢
N-1)婊¤冻鏃讹紝鎵ц��(琛ㄨ揪寮廚-1)锛涘�傛灉浠ヤ笂鏉′欢閮戒笉婊¤冻锛屽垯鎵ц�岃〃杈惧紡N; 鎸囦护缁撴潫銆�
渚嬪�傦細
IF temp<17
THEN heating_on := TRUE;
ELSIF temp>30
THEN Heating_on := FALSE; Colding_on:= FALSE;
ELSE
Colding_on:= TRUE;
END_IF
褰撴俯搴﹂檷鍒�17搴︿互涓嬫椂锛屽紑鍚�鍔犵儹鍣�锛涘綋娓╁害鍗囬珮鍒�30搴︿互涓婃椂锛屽紑鍚�鍒跺喎鍣�锛涘綋娓╁害鍦�
17搴�~30搴︿箣闂存椂锛屽姞鐑�鍣ㄣ�佸埗鍐峰櫒鍧囦繚鎸佸叧闂�銆�

  
3 CASE鎸囦护
璇�娉曪細
CASE <鎺у埗鍙橀噺> OF
<鏁板��1>: <琛ㄨ揪寮�1>
<鏁板��2>: <琛ㄨ揪寮�2>
<鏁板��3, 鏁板��4, 鏁板��5>: <琛ㄨ揪寮�3>
<鏁板��6 .. 鏁板��10>: <琛ㄨ揪寮�4>
...
<鏁板�糿>: <琛ㄨ揪寮弉>
ELSE <ELSE鐨勮〃杈惧紡>
END_CASE
CASE鎸囦护鐢ㄤ簬灏嗘帶鍒跺彉閲忓拰鑻ュ共涓�鎿嶄綔鏁拌繘琛屾瘮杈冿紝濡傛灉鎺у埗鍙橀噺涓庡叾涓�涓�涓�鍊肩浉鍚岋紝鍒欐墽
琛岃�ュ�煎�瑰簲鐨勮��鍙ャ�傚�傛灉涓庝换浣曚竴涓�鍊奸兘涓嶇浉鍚岋紝鍒欐墽琛孍LSE鎸囦护鐨勮��鍙ャ��
渚嬪�傦細
CASE INT1 OF
1, 5: BOOL1 := TRUE;
2: BOOL2 := TRUE;
10..20: BOOL3:= TRUE;
ELSE
BOOL1 := BOOL2 :=BOOL3 :=FALSE;
END_CASE
褰揑NT1=1鎴�5鏃讹紝 BOOL1涓虹湡锛�
褰揑NT1=2鏃讹紝 BOOL2涓虹湡锛�
褰揑NT1=10~20涔嬮棿鐨勬暟鍊兼椂锛� BOOL3涓虹湡锛�
鍚﹀垯锛� BOOL1銆� BOOL2銆� BOOL3鍧囦负鍋囥��
褰撲娇鐢↖F鎸囦护鏈夎繃澶氬垎灞傦紝鎴栬�呴渶瑕佷娇鐢ㄥ�氫釜ELSIF锛屾墠鑳藉畬鎴愮▼搴忓姛鑳芥椂锛屼娇鐢–ASE鎸囦护
鏇夸唬IF鎸囦护锛屽彲浠ョ畝鍖栫▼搴忥紝骞朵笖鑳芥彁楂樼▼搴忕殑鍙�璇绘�с��
4 FOR寰�鐜�鎸囦护
FOR寰�鐜�鎸囦护鐢ㄤ簬涓�浜涢渶瑕侀噸澶嶆墽琛岀殑璇�鍙ワ紝瀹冨彲浠ヤ娇绋嬪簭绠�鐭�骞朵笖涓�鐩�浜嗙劧銆備絾闇�瑕佹敞鎰�
閬垮厤闄峰叆姝诲惊鐜�銆�
FOR寰�鐜�鎸囦护鏄�鏈夐檺鍒剁殑寰�鐜�鎸囦护, 褰撻檺鍒舵潯浠舵弧瓒筹紙鍙橀噺鍊肩瓑浜庘�滃惊鐜�缁撴潫鏃跺彉閲忓�尖�濓級鏃讹紝
绋嬪簭灏卞皢閫�鍑篎OR寰�鐜�锛屾墽琛屼笅涓�鏉℃寚浠ゃ��
璇�娉曪細
FOR <寰�鐜�鎺у埗鍙橀噺> := <寰�鐜�寮�濮嬫椂鍙橀噺鍊�> TO <寰�鐜�缁撴潫鏃跺彉閲忓��>{BY <鍙橀噺閫掑�炴�ラ暱>}
DO
<琛ㄨ揪寮�>
END_FOR
鍏朵腑锛寋}鍐呰��鍙ュ彲鏍规嵁闇�瑕佺渷鐣ワ紝鐪佺暐鏃舵�ラ暱榛樿�や负1銆�
渚嬪�傦細
FOR Counter:=1 TO 5 BY 1 DO
Var1:=Var1*2;
END_FOR
姝ょ▼搴忕殑寰�鐜�鎺у埗鍙橀噺涓篊ounter锛屽惊鐜�寮�濮嬫椂鎺у埗鍙橀噺鍒濆�间负1锛屾瘡涓�娆″惊鐜疌ounter+1锛�
褰揅ounter绛変簬5鏃讹紝鎵ц�屽畬FOR寰�鐜�鍐呭�瑰悗锛岄��鍑哄惊鐜�锛屾墽琛屼笅涓�鏉¤��鍙ャ��
璇�鍙�Var1:=Var1*2涓�鍏辨墽琛�5娆★紱鍋囪�綱ar1鐨勫垵濮嬪�兼槸1锛岄偅涔堝惊鐜�缁撴潫鍚庯紝 Var1鐨勫�间负
32銆�
娉ㄦ剰锛� <寰�鐜�缁撴潫鏃跺彉閲忓��>涓嶈兘绛変簬鍏舵暟鎹�绫诲瀷鐨勬渶澶у�硷紝鍚﹀垯浼氳繘鍏ユ�诲惊鐜�銆�
渚嬪�傦紝鍋囪�句笂渚嬩腑鎵�浣跨敤鐨勮�℃暟鍙橀噺Counter鐨勭被鍨嬫槸SINT锛堣寖鍥翠粠-128鍒�127锛夛紝濡傛灉璇�
鍙ヤ负
鈥淔OR Counter:=1 TO 127 BY 1 DO鈥�
鍒欎細杩涘叆姝诲惊鐜�銆傜紪绋嬫椂搴旈伩鍏嶆�ょ被鎯呭喌鐨勫彂鐢熴��
5 WHILE寰�鐜�鎸囦护
WHILE寰�鐜�涓嶧OR寰�鐜�浣跨敤鏂规硶绫讳技銆備簩鑰呯殑涓嶅悓涔嬪�勬槸锛� WHILE寰�鐜�鐨勭粨鏉熸潯浠朵笉鏄�鎸囧畾
鐨勫惊鐜�娆℃暟锛岃�屾槸浠绘剰鐨勯�昏緫琛ㄨ揪寮忋�傚綋婊¤冻璇ヨ〃杈惧紡鍙欒堪鐨勬潯浠舵弧瓒虫椂锛屾墽琛屽惊鐜�銆�
璇�娉曪細
WHILE <寰�鐜�鏉′欢>
<琛ㄨ揪寮�>
END_WHILE
WHILE寰�鐜�鎵ц�屽墠鍏堟��鏌�<寰�鐜�鏉′欢>鏄�鍚︿负TRUE锛屽�傛灉涓篢RUE锛屽垯鎵ц��<琛ㄨ揪寮�>锛涘綋鎵ц��
瀹屼竴娆″悗锛屽啀娆℃��鏌�<寰�鐜�鏉′欢>锛屽�傛灉浠嶄负TRUE锛屽垯鍐嶆�℃墽琛岋紝鐩村埌<寰�鐜�鏉′欢>涓篎ALSE銆�
濡傛灉涓�寮�濮�<寰�鐜�鏉′欢>灏变负FALSE锛屽垯涓嶄細鎵ц�學HILE寰�鐜�閲岀殑鎸囦护銆�
渚嬪�傦細
WHILE Counter<>0 DO
Var1 := Var1*2;
Counter := Counter-1;
END_WHILE
姝ょ▼搴忓彧瑕丆ounter涓嶇瓑浜�0锛屽垯涓�鐩翠細鎵ц�學HILE寰�鐜�涓�鐨勬寚浠わ紝鐩村埌Counter绛変簬0涓烘��銆�
姣忔墽琛屼竴娆″惊鐜�锛岄�氳繃鎸囦护鈥淐ounter := Counter-1鈥濅娇Counter鐨勫�煎噺1锛屽綋Counter绛変簬0
鏃讹紝寰�鐜�缁撴潫銆�
娉ㄦ剰锛� WHILE寰�鐜�鍥犱负娌℃湁寰�鐜�娆℃暟鐨勯檺瀹氾紝鍥犳�ょ浉瀵笷OR寰�鐜�鏇村�规槗鍙戠敓姝诲惊鐜�锛涘洜姝�
鍙�浠ュ湪寰�鐜�鎸囦护鐨勫唴瀹逛腑锛屽�炲姞璇�鍙ユ潵閬垮厤姝诲惊鐜�鐨勪骇鐢熴�傚�備笂杩扮▼搴忎腑鐨勨�淐ounter :=
Counter-1鈥濆嵆鍙�閬垮厤绋嬪簭杩涘叆姝诲惊鐜�銆�
6 REPEAT寰�鐜�鎸囦护
REPEAT寰�鐜�涓嶹HILE寰�鐜�涓�鏍凤紝涔熸槸娌℃湁鏄庣‘寰�鐜�娆℃暟鐨勫惊鐜�銆備笌WHILE寰�鐜�鐨勫尯鍒�鍦ㄤ簬锛�
REPEAT寰�鐜�鍦ㄦ寚浠ゆ墽琛屼互鍚庯紝鎵嶆��鏌ョ粨鏉熸潯浠躲�傝繖灏辨剰鍛崇潃鏃犺�虹粨鏉熸潯浠舵�庢牱锛屽惊鐜�鑷冲皯
鎵ц�屼竴娆°��
璇�娉曪細
REPEAT
<琛ㄨ揪寮�>
UNTIL <寰�鐜�缁撴潫鏉′欢>
END_REPEAT
璇�鍙ヤ竴鐩存墽琛岋紝鐩村埌<寰�鐜�缁撴潫鏉′欢>涓篢RUE鏃讹紝 REPEAT寰�鐜�缁撴潫銆傚�傛灉<寰�鐜�缁撴潫鏉′欢>涓�
寮�濮嬪氨涓篢RUE锛屽垯寰�鐜�鍙�鎵ц�屼竴娆°��
渚嬪�傦紝涓婅堪WHILE绀轰緥绋嬪簭涔熷彲鍐欎负锛�
REPEAT
Var1 := Var1*2;
Counter := Counter-1;
UNTIL
Counter=0
END_REPEAT
娉ㄦ剰锛� REPEAT寰�鐜�鍚屾牱闇�瑕侀伩鍏嶆�诲惊鐜�鐨勫彂鐢熴��
鍦ㄤ竴瀹氱殑鎰忎箟涓婏紝 WHILE寰�鐜�鍜孯EPEAT寰�鐜�姣擣OR寰�鐜�鐨勫姛鑳芥洿鍔犲己澶э紝杩欐槸鍥犱负鍦ㄦ墽琛屽惊
鐜�鍓嶏紝 WHILE寰�鐜�鍜孯EPEAT寰�鐜�涓嶉渶瑕佺煡閬撳惊鐜�鐨勬�℃暟銆傚洜姝わ紝鍦ㄦ湁浜涙儏鍐典笅锛屽彧浣跨敤杩�
涓ょ�嶅惊鐜�灏卞彲浠ヤ簡銆傜劧鑰岋紝濡傛灉娓呮�氬湴鐭ラ亾浜嗗惊鐜�鐨勬�℃暟锛岄偅涔團OR寰�鐜�鏇村ソ锛屽洜涓篎OR寰�
鐜�鍙�浠ラ伩鍏嶄骇鐢熸�诲惊鐜�銆�
7 CONTINUE鎸囦护
CONTINUE鎸囦护鍙�浠ュ湪FOR銆� WHILE鍜孯EPEAT涓夌�嶅惊鐜�涓�浣跨敤锛屽叾浣滅敤涓轰腑鏂�鏈�娆″惊鐜�锛岀洿
鎺ユ墽琛屼笅娆″惊鐜�銆�
渚嬪�傦細
FOR Counter:=1 TO 5 BY 1 DO
INT1:= INT1/2;
IF INT1=0 THEN
CONTINUE; (* to avoid division by zero *)
END_IF
Var1:=Var1/INT1; (* only executed, if INT1 is not "0" *)
END_FOR
姝ょ▼搴忎娇鐢–ONTINUE鎸囦护锛屽綋INT1绛変簬0鏃讹紝鐩存帴缁撴潫鏈�娆″惊鐜�锛屽紑濮嬩笅涓�娆″惊鐜�锛屼互
閬垮厤鎸囦护鈥淰ar1:=Var1/INT1鈥濅腑瀵笽NT1鐨勯櫎闆舵搷浣溿��

8 EXIT鎸囦护
EXIT鐢ㄤ簬閫�鍑篎OR寰�鐜�銆� WHILE寰�鐜�銆� REPEAT寰�鐜�銆備緥濡傦細
FOR Counter:=1 TO 5 BY 1 DO
INT1:= INT1/2;
IF INT1=0 THEN
EXIT; (* to avoid division by zero *)
END_IF
Var1:=Var1/INT1;
END_FOR
褰揑NT1绛変簬0鏃讹紝 FOR寰�鐜�缁撴潫銆�
9. RETURN鎸囦护
杩斿洖鎸囦护锛岀敤浜庢牴鎹�涓�瀹氭潯浠堕��鍑篜OU銆�
渚嬪�傦細
IF b=TRUE THEN
RETURN;
END_IF
a := a + 1;
濡傛灉b涓篢RUE锛屽皢涓嶄細鎵ц�宎 := a +1锛岃�屾槸鐩存帴閫�鍑篜OU銆�
10. JMP鎸囦护
<label>:
JMP <label>;
璺宠浆鎸囦护锛岃烦杞�鍒發abel鎵�鍦ㄧ殑浣嶇疆鎵ц�岀▼搴忋��
渚嬪�傦細
i := 0;
label: i := i+1;
......
IF i<10 THEN
JMP label;
END_IF
褰搃<10鏃讹紝璺宠浆鍥瀕abel鎵�鍦ㄨ�岋紝鎵ц�宨:=i+1銆�
JMP鎸囦护瀹规槗閫犳垚绋嬪簭缁撴瀯娣蜂贡锛岄檷浣庝唬鐮佸彲璇绘�э紝涓嶅缓璁�浣跨敤銆�