UaType_Null), STRUCT(iecType := TYPE_REFERENCE [...] Iec [...] ] OF Iec

运算符：__ISVALIDREF 运算符是 IEC 61131-3 [...] 程序的描述和示例可以在数据类型的描述中找到 REFERENCE . 本节内容如下 :

Reference ¶ This is a [...] . CmpIec [...] ¶ Placeholder: CmpIec

IecTaskCreate2 (FUN) ¶ FUNCTION IecTaskCreate2 : RTS_IEC

IecVarAccess (FB) ¶ FUNCTION_BLOCK Iec [...] VarAccess17, IIecVarAccess18, Iec

BACnetDevObjPropReference (STRUCT) ¶ TYPE BACnetDevObjPropReference [...] ID CmpBACnet.IEC

Reference ¶ This is a [...] Iec [...] ¶ Placeholder: Iec

Reference ¶ This is a [...] Interfaces, * (System) CmpIec [...] Identification ¶ Name: CmpIec

Reference ¶ This is a [...] Errors2 Interfaces, * (System) CmpIec [...] ¶ Placeholder: CmpIec

Reference ¶ This is a [...] Interfaces, * (System) Iec [...] Identification ¶ Name: Iec