Documentation

OPC Toolbox Properties

Server Connection and Browsing

Group Data Access Group objects contained by client
Name Descriptive name for OPC Toolbox object
Tag Label to associate with OPC Toolbox object
Type OPC Toolbox object type
UserData Data to associate with OPC Toolbox object
Host DNS name or IP address of server
ServerID Server identity
Status Status of connection to OPC server
Timeout Maximum time to wait for completion of instruction to server

Data Access

Item and Group Management

GroupType Public status of dagroup object
Item Data Access Item objects contained by group
Name Descriptive name for OPC Toolbox object
Parent OPC Toolbox object that contains dagroup or daitem object
Tag Label to associate with OPC Toolbox object
TimeBias Time bias of group
Type OPC Toolbox object type
UserData Data to associate with OPC Toolbox object
AccessRights Inherent nature of access to item
Active Group or item activation state
ItemID Fully qualified ID on OPC server
ScanRate Fastest possible data update rate
CanonicalDataType Server's data type for item
DataType Client item's data type
Quality Quality of data value as string
QualityID Quality of data value as 16-bit integer
TimeStamp Time when item was last read
Value Item value

Data Logs and Buffers

Active Group or item activation state
DeadbandPercent Percentage change in item value that causes subscription callback
LogFileName Name of disk file to which logged data is written
Logging Status of data logging
LoggingMode Specify destination for logged data
LogToDiskMode Method of disk file handling for logged data
RecordsAcquired Number of records acquired
RecordsAvailable Number of records available in OPC Toolbox engine
RecordsToAcquire Number of records to acquire for logging session
Subscription Enable server update when data changes
UpdateRate Rate, in seconds, at which subscription callbacks occur

Events and Callbacks

ErrorFcn Callback function file to execute when error event occurs
EventLog Event information log
EventLogMax Maximum number of events to store in event log
ShutDownFcn Callback function file to execute when OPC server shuts down
TimerFcn Callback function file to execute when predefined period passes
TimerPeriod Period between timer events
CancelAsyncFcn Callback function file to execute when asynchronous operation is canceled
DataChangeFcn Callback function file to execute when data change event occurs
ReadAsyncFcn Callback function file to execute when asynchronous read completes
RecordsAcquiredFcn Callback function file to execute when RecordsAcquired event occurs
RecordsAcquiredFcnCount Number of records to acquire before RecordsAcquired event occurs
StartFcn Callback function file to execute immediately before logging starts
StopFcn Callback function file to execute immediately after logging stops
WriteAsyncFcn Callback function file to execute when asynchronous write completes
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