CoDeSys鍏ラ棬瀹炴垬涓�璧峰�︿範锛堝崄涓冿級锛氭寔缁�鍙橀噺锛圧ETAIN/PERSISTENT锛夊疄鎿�

鏃犲績椋炴壃

鍦≒LC鎺у埗绯荤粺涓�锛岄儴鍒嗘暟鎹�闇�鍦ㄨ�惧�囧叧鏈恒�佸紓甯告柇鐐瑰悗淇濈暀锛屽�傜敓浜х嚎璁℃暟鍣ㄥ�笺�佸伐鑹哄弬鏁扮瓑锛岄伩鍏嶉噸鍚�鍚庨噸鏂板垵濮嬪寲銆侰oDeSys鎻愪緵RETAIN鍜孭ERSISTENT RETAIN涓ょ�嶆寔缁�鍙橀噺锛屾弧瓒充笉鍚屽満鏅�涓嬬殑鏁版嵁淇濈暀闇�姹傘�傛湰鏂囧皢璇﹁В鎸佺画鍙橀噺鐨勫垱寤恒�佸０鏄庛�佸�嶄綅閫昏緫鍙婁娇鐢ㄦ敞鎰忎簨椤广��

涓�銆佹寔缁�鍙橀噺鏍稿績鍖哄埆涓庡簲鐢ㄥ満鏅�

涓ょ�嶆寔缁�鍙橀噺鐨勬牳蹇冨樊寮傜殑鍦ㄤ簬鏁版嵁淇濈暀鑼冨洿锛岄�傞厤涓嶅悓閲嶅惎/澶嶄綅鍦烘櫙锛�

• VAR RETAIN锛堜繚鐣欏彉閲忥級锛氫粎鍦ㄦ帶鍒跺櫒闈炴�ｅ父鍏虫満銆佹�ｅ父鍏虫満銆佺儹澶嶄綅鏃朵繚鐣欏�硷紝绋嬪簭閲嶆柊涓嬭浇鍚庡垵濮嬪寲锛涢�傜敤浜庝复鏃朵繚鐣欐暟鎹�锛屽�傜數婧愭晠闅滃悗闇�鎭㈠�嶇殑璁℃暟鍣ㄣ��
  

• VAR PERSISTENT RETAIN锛堟案涔呭彉閲忥級锛氬湪鐑�澶嶄綅銆佸喎澶嶄綅銆侀噸鏂颁笅杞姐�佸師濮嬪�嶄綅澶栫殑鍦烘櫙鍧囦繚鐣欏�硷紝浠呭師濮嬪�嶄綅鍚庡垵濮嬪寲锛涢�傜敤浜庨暱鏈熶繚鐣欐牳蹇冨弬鏁帮紝濡傝�惧�囩疮璁¤繍琛屾椂闀裤�佸伐鑹哄熀鍑嗗�笺��
  

娉ㄦ剰锛氫粠CoDeSys V3.3.0.1璧凤紝PERSISTENT涓嶱ERSISTENT RETAIN鍔熻兘瀹屽叏涓�鑷达紝鍙�閫氱敤銆�

浜屻�佹柊寤烘寔缁�鍙橀噺鍒楄〃姝ラ��

• 閫変腑宸︿晶鈥淎pplication鈥濊妭鐐癸紝鍙抽敭鍗曞嚮閫夋嫨鈥滄坊鍔犲�硅薄鈥濓紱
  
  
  
  
• 鍦ㄥ脊鍑虹殑鑿滃崟涓�閫夋嫨鎸佺画鍙橀噺鍒楄〃锛岃緭鍏ュ垪琛ㄥ悕绉帮紙濡傗�淧ersistentVars鈥濓級锛�
  
  
  
  
• 鐐瑰嚮鈥滅‘璁も�濓紝瀹屾垚鎸佺画鍙橀噺鍒楄〃鍒涘缓銆�
  

鍏抽敭璇存槑锛氭寔缁�鍙橀噺蹇呴』涓哄叏灞�鍙橀噺锛屼粎鑳藉湪鈥渟pecial global variables list鈥濅腑瀹氫箟鈥淧ersistent Variables鈥濓紝灞�閮ㄥ彉閲忎腑瀹氫箟鐨凴ETAIN浠呭湪鍔熻兘妯″潡瀹炰緥涓�鐢熸晥锛屽嚱鏁板唴灞�閮ㄥ彉閲忓畾涔塕ETAIN鏃犳晥銆�

娉ㄦ剰锛�

浠� CoDeSysV3.3.0.1 璧凤紝PERSISTENT 鍜� PERSISTENTRETAIN/RETAINPERSISTENT 瀹炵幇鐨勫姛鑳�宸茬浉鍚屻��

鎸佷箙鍙橀噺蹇呴』涓哄叏灞�鍙橀噺銆�鈥嬧�嬧�嬧�嬧�嬧�嬧��

Persistent 鍙橀噺鍙�鑳藉湪 specialglobalvariableslist 涓�瀹氫箟鈥�PersistentVariables 鈥�銆�

涓夈�佹寔缁�鍙橀噺鐨勫０鏄庝笌浣跨敤

1. 鍙橀噺澹版槑鏍煎紡

鎸佺画鍙橀噺闇�鍦ㄥ叏灞�鍙橀噺鍒楄〃涓�澹版槑锛屼袱绉嶅彉閲忕殑鏍囧噯鏍煎紡濡備笅锛�

锛�1锛塕ETAIN鍙橀噺澹版槑

VAR RETAIN      // 鏍煎紡锛氬彉閲忓悕: 鏁版嵁绫诲瀷 := 鍒濆�嬪��;      Counter_Product: INT := 0; // 鐢熶骇绾夸骇鍝佽�℃暟鍣�锛岀數婧愭晠闅滃悗淇濈暀鍊�      Speed_Base: REAL := 50.0; // 鍩哄噯閫熷害鍊硷紝鐑�澶嶄綅鍚庝繚鐣� END_VAR

锛�2锛塒ERSISTENT RETAIN鍙橀噺澹版槑

2. 鍙橀噺澶嶄綅閫昏緫锛堥檮琛ㄦ牸璇存槑锛�

涓嶅悓鍦ㄧ嚎鍛戒护瀵逛笁绉嶅彉閲忕殑褰卞搷涓嶅悓锛坸=淇濈暀鍊硷紝-=鍒濆�嬪�硷級锛屽叿浣撳�備笅琛ㄦ墍绀猴細

鍦ㄧ嚎鍛戒护	VAR锛堟櫘閫氬彉閲忥級	VAR RETAIN锛堜繚鐣欏彉閲忥級	VAR PERSISTENT RETAIN锛堟案涔呭彉閲忥級
鐑�澶嶄綅	-	x	x
鍐峰�嶄綅	-	-	x
鍘熷�嬪�嶄綅	-	-	-
涓嬭浇	-	-	x
鍦ㄧ嚎鏀瑰彉	x	x	x
閲嶆柊涓嬭浇	-	x	x

淇濈暀鍙橀噺鐢ㄥ叧閿�瀛椻��RETAIN鈥濇潵璇嗗埆锛岃繖浜涘彉閲忎繚鎸佸畠浠�鐨勫�煎嵆浣�鏄�鍦ㄦ帶鍒跺櫒鐨勯潪姝ｅ父鍏抽棴鏃跺拰姝ｅ父鐨勫叧闂�鍜屽叾涓�鐨勪竴涓�鎺у埗鍣ㄦ垨鍦ㄥ懡浠も�滅儹澶嶄綅鈥濇椂銆傚綋绋嬪簭閲嶆柊杩愯�屾椂锛屽瓨鍌ㄧ殑鍊煎皢杩涜��杩涗竴姝ョ殑澶勭悊銆備竴涓�鍏蜂綋鐨勪緥瀛愭槸鐢熶骇绾夸笂鐨勯ゼ褰㈣�℃暟鍣ㄥ湪鐢垫簮鏁呴殰鍚庨噸鏂板紑濮嬭�℃暟銆傛墍鏈夊叾瀹冪殑鍙橀噺浠庢柊鍒濆�嬪寲锛屼笉鏄�鐢ㄥ畠浠�鐨勫垵濮嬪寲鍊兼垨鏍囧噯鍒濆�嬪寲鐨勫�笺�備笌姘镐箙鍙橀噺鐩稿弽锛屼繚鐣欏彉閲忓湪绋嬪簭鐨�涓�涓�鏂扮殑涓嬭浇鏃堕噸鏂板垵濮嬪寲銆�

姘镐箙鍙橀噺閫氳繃鍏抽敭瀛椻��PERSISTENTRETAIN鈥濇潵璇嗗埆銆備笉璞′繚鐣欏彉閲忥紝杩欎簺鍙橀噺鍦ㄤ竴涓�閲�鏂颁笅杞芥垨鍦ㄦ墽琛屽懡浠も�� 鍐峰�嶄綅鈥濇垨鈥滃師濮嬪�嶄綅鈥濅箣鍚庤繕浼氱户缁�淇濈暀瀹冧滑鐨勫�笺�傚�傝〃2-8 鎵�绀猴紝鍦ㄤ綍绉嶅湪绾垮懡浠ゆ椂浼氬�嶄綅鎸佺画鍙橀噺銆�

鍥涖�佷娇鐢ㄦ敞鎰忎簨椤癸紙閬垮潙鎸囧崡锛�

• 鍐呭瓨闄愬埗锛氫笉鍚岀‖浠舵帶鍒跺櫒鐨勬寔缁�鍙橀噺鍐呭瓨瀹归噺涓嶅悓锛岄渶鎻愬墠鏍哥畻鍙橀噺鍗犵敤鍐呭瓨锛岄伩鍏嶈秴鍑虹‖浠朵笂闄愶紱
  

• 灞�閮ㄥ彉閲忕壒娈婅�勫垯锛氬姛鑳芥ā鍧楋紙FB锛変腑鐨勫眬閮≧ETAIN鍙橀噺锛屼細浣挎暣涓狥B瀹炰緥瀛樺叆淇濈暀鍖猴紙浠呭畾涔夌殑RETAIN鍙橀噺鐢熸晥锛夛紱鍑芥暟锛團C锛変腑鐨勫眬閮≧ETAIN鍙橀噺鏃犳晥锛屾棤娉曚繚鐣欏�硷紱
  

• 鍒濆�嬪寲閫昏緫锛歊ETAIN鍙橀噺鍦ㄧ▼搴忔柊涓嬭浇鏃跺垵濮嬪寲锛孭ERSISTENT RETAIN浠呭師濮嬪�嶄綅鍚庡垵濮嬪寲锛岄渶鏍规嵁鍦烘櫙閫夋嫨鍙橀噺绫诲瀷锛�
  

• 鏁版嵁涓�鑷存��锛氭寔缁�鍙橀噺鐨勫�煎湪鎺у埗鍣ㄩ噸鍚�鍚庣洿鎺ユ部鐢�锛岄渶纭�淇濇柇鐢靛墠鏁版嵁鏃犲紓甯革紝閬垮厤鏁呴殰鏁版嵁淇濈暀褰卞搷鍚庣画杩愯�屻��