C# Class Quickstarts.DataAccessServer.UnderlyingSystemBlock

This class simulates a block in the system.

Public Methods

Method	Description
CreateTag ( string tagName, UnderlyingSystemDataType dataType, UnderlyingSystemTagType tagType, string engineeringUnits, bool writeable ) : void	Creates the tag.
DoSimulation ( long counter, int index, Opc generator ) : void	Simulates a block by updating the state of the tags belonging to the condition.
GetTags ( ) : IList	Returns a snapshot of the tags belonging to the block.
StartMonitoring ( TagsChangedEventHandler callback ) : void	Starts the monitoring.
StopMonitoring ( ) : void	Stops monitoring.
UnderlyingSystemBlock ( ) : System	Initializes a new instance of the UnderlyingSystemBlock class.
WriteTagValue ( string tagName, object value ) : uint	Writes the tag value.

Method	Description
FindTag ( string tagName ) : UnderlyingSystemTag	Finds the tag identified by the name.
UpdateTagMetadata ( UnderlyingSystemTag tag, Opc generator ) : bool	Updates the metadata for a tag.
UpdateTagValue ( UnderlyingSystemTag tag, Opc generator ) : bool	Updates the value of an tag.

Creates the tag.

public CreateTag ( string tagName, UnderlyingSystemDataType dataType, UnderlyingSystemTagType tagType, string engineeringUnits, bool writeable ) : void
tagName	string	Name of the tag.
dataType	UnderlyingSystemDataType	Type of the data.
tagType	UnderlyingSystemTagType	Type of the tag.
engineeringUnits	string	The engineering units.
writeable	bool	if set to true the tag is writeable.
return	void

Simulates a block by updating the state of the tags belonging to the condition.

public DoSimulation ( long counter, int index, Opc generator ) : void
counter	long	The number of simulation cycles that have elapsed.
index	int	The index of the block within the system.
generator	Opc	An object which generates random data.
return	void

Returns a snapshot of the tags belonging to the block.

public GetTags ( ) : IList
return	IList

Starts the monitoring.

public StartMonitoring ( TagsChangedEventHandler callback ) : void
callback	TagsChangedEventHandler	The callback to use when reporting changes.
return	void

Stops monitoring.

public StopMonitoring ( ) : void
return	void

Initializes a new instance of the UnderlyingSystemBlock class.

public UnderlyingSystemBlock ( ) : System
return	System

Writes the tag value.

public WriteTagValue ( string tagName, object value ) : uint
tagName	string	Name of the tag.
value	object	The value.
return	uint