SymbolReadValueAsync Method
Reads the Value of the IValueSymbol asynchronously.
Namespace: TwinCAT.Ads.TypeSystem
Assembly: TwinCAT.Ads (in TwinCAT.Ads.dll)
Version: 7.0.0+e56d35ccc4675faac24789a4aab60071fc61d470
Syntax
C#
public Task<ResultReadValueAccess> ReadValueAsync(
CancellationToken cancel
)Parameters
|
cancel CancellationToken |
The cancellation token. |
Return Value
Task
ResultReadValueAccess
A tasks that represents the asynchronous 'ReadValue'
operation. The read result is stored in the ResultReadValueAccess
return value and contains the Value and the
ErrorCode.
Remarks
Calling on primitive types, a call of this method will return the primitive value. On complex types (structures and arrays) it depends on the ISymbolLoader settings what will happen. In non dynamic modes: the raw byte Array will be returned, in dynamic mode: A Value will be created on the fly.