Command: OPCSetString

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Command: OPCSetString

Assigns a String type value to an OPC server.

Input Parameters

OPCItemHandle	Specifies the handle of an OPC item. Longinteger variable 0 <= OPCItemHandle <= 2147483647
OPCStringValue	Specifies the current value of an OPC item. String variable Maximum 80 characters

Global Parameters

OPCErrorCode

Receives the status of the OPC command. Longinteger variable 0 <= OPCErrorCode <= 2147483647 The OPCErrorCode variable returns the number or the OPC code of the respective message: No. OPC code Description 0 eOPCAuto_Ok DIAdem executed the command without errors. 1 eOPCAuto_GeneralError A global error has occurred. 2 eOPCAuto_BlockMapEntryNotFound DIAdem cannot find entry for the signal and device specification in the driver blockmap. 3 eOPCAuto_UnidentifiedBlocktype The block type is not valid because no DAC input block or DAC output block open. 4 eOPCAuto_OPCBlockNotOpen No DAC block opened with the DACObjOpen command. 5 eOPCAuto_InvalidSignalIndex The signal index is not valid. Values from 1 to 255 are valid. 6 eOPCAuto_InvalidLogReset The value for the time of the logfile reset is not valid. 7 eOPCAuto_InvalidReportVerbosity The value for the type and extent of information to be recorded is not valid. 8 eOPCAuto_ProgIDNotInLocalRegistry DIAdem cannot find the transferred ProgID in the local registration. 9 eOPCAuto_ServerNotConnected The OPC server is not connected. 10 eOPCAuto_DataConversionFail Data could not be converted. 11 eOPCAuto_InvalidErrorAction The value provided for the error reaction is invalid. 12 eOPCAuto_InvalidDACSigListLen The length of the DAC signal list specified in the block is invalid. 13 eOPCAuto_InvalidServerName The name of the OPC server is invalid. 14 eOPCAuto_NotImplemented The function is not implemented. 15 eOPCAuto_RemoteConnectWithoutClassID Transfer the ClassID to the OPCSrvConnect command to access a remote server without local registration. You only can reference OPC servers on remote computers with the ProgID if the ProgID or the server are registered locally. 16 eOPCAuto_ArrayAccesNotAllowed The function cannot access arrays. 17 eOPCAuto_NoMoreHandles No more OPC objects possible in the script area. 18 eOPCAuto_InvalidServerHandle The server handle is invalid. 19 eOPCAuto_InvalidGroupHandle The group handle is invalid. 20 eOPCAuto_InvalidItemHandle The item handle is invalid. 21 eOPCAuto_ConnectTimeout Timeout occurred while connecting to OPC server. The server cannot be accessed or one of the Proxy-DLLs such as opcproxy.dll and opccomn_ps.dll, is not registered. 22 eOPCAuto_CallTimeout A timeout occurred while a function on an OPC server was being called. 23 eOPCAuto_NoIOPCServer No IOPCServer interface at OPC server. 24 eOPCAuto_NoIOPCItemMgt No IOPCItemMgt interface at OPC server. 25 eOPCAuto_NoIOPCSyncIO No IOPCSyncIO interface at OPC server. 26 eOPCAuto_NoIOPCGroupStateMgt No IOPCGroupStateMgt interface at OPC server. 27 eOPCAuto_InvalidItemNo The number of items is invalid or an OPC group contains more items than acceptable.

Related Topics

Command: OPCAddGroup | Command: OPCAddItems | Command: OPCClear | Command: OPCClearGroup | Command: OPCClearItemDef | Command: OPCClearServer | Command: OPCConnect | Command: OPCDISConnect | Command: OPCGetDouble | Command: OPCGetInt | Command: OPCGetString | Command: OPCReadSync | Command: OPCRemoveGroup | Command: OPCRemoveItems | Command: OPCResetLogFile | Command: OPCSetActiveStat | Command: OPCSetCallTo | Command: OPCSetConnectTo | Command: OPCSetDouble | Command: OPCSetInt | Command: OPCValidateItems | Command: OPCWriteSync