目录
PG/PC 工业通信第 2 卷 - 接口
16 编程手册, 01/2015, C79000-G8952-C197-13
7.4.3.2 AsyncReadComplete ..................................................................................................... 919
7.4.3.3 AsyncWriteComplete ..................................................................................................... 920
7.4.3.4 AsyncCancelComplete .................................................................................................. 921
7.5 集合对象 OPCIterms ...................................................................................................... 922
7.5.1 OPCItems 集合对象的属性 ............................................................................................ 923
7.5.1.1 Parent ............................................................................................................................ 923
7.5.1.2 DefaultRequestedDataType .......................................................................................... 923
7.5.1.3 DefaultAccessPath ........................................................................................................ 924
7.5.1.4 DefaultIsActive ............................................................................................................... 925
7.5.1.5 Count ............................................................................................................................. 925
7.5.2 OPCItems 集合对象的方法 ............................................................................................ 926
7.5.2.1 Item ................................................................................................................................ 926
7.5.2.2 GetOPCItem .................................................................................................................. 926
7.5.2.3 AddItem .......................................................................................................................... 927
7.5.2.4 AddItems ........................................................................................................................ 928
7.5.2.5 Remove .......................................................................................................................... 929
7.5.2.6 Validate .......................................................................................................................... 930
7.5.2.7 SetActive ........................................................................................................................ 931
7.5.2.8 SetClientHandles ........................................................................................................... 932
7.5.2.9 SetDataTypes ................................................................................................................ 933
7.6 OPCItem 对象 ................................................................................................................ 934
7.6.1 OPCItem 对象的属性 ..................................................................................................... 935
7.6.1.1 Parent ............................................................................................................................ 935
7.6.1.2 ClientHandle .................................................................................................................. 935
7.6.1.3 ServerHandle ................................................................................................................. 936
7.6.1.4 AccessPath .................................................................................................................... 937
7.6.1.5 AccessRights ................................................................................................................. 937
7.6.1.6 ItemID ............................................................................................................................ 938
7.6.1.7 IsActive .......................................................................................................................... 938
7.6.1.8 RequestedDataType ...................................................................................................... 939
7.6.1.9 Value .............................................................................................................................. 940
7.6.1.10 Quality ............................................................................................................................ 940
7.6.1.11 TimeStamp ..................................................................................................................... 941
7.6.1.12 CanonicalDataType ....................................................................................................... 942
7.6.1.13 EUType .......................................................................................................................... 942
7.6.1.14 EUInfo ............................................................................................................................ 943
7.6.2 OPCItem 对象的方法 ..................................................................................................... 944
7.6.2.1 Read............................................................................................................................... 944
7.6.2.2 Write ............................................................................................................................... 945
7.7 定义 ................................................................................................................................ 946
7.7.1 服务器状态 ..................................................................................................................... 946
7.7.2 错误消息 ......................................................................................................................... 947
7.8 自动化接口参考附录 ...................................................................................................... 949