AdsClient.TryReadValue(ISymbol, Object) Method

Tries to read the value of a symbol and returns the value as boxed object.

Namespace: TwinCAT.Ads
Assembly: TwinCAT.Ads (in TwinCAT.Ads.dll) Version: 7.0.0+e56d35ccc4675faac24789a4aab60071fc61d470

Syntax

C#

public AdsErrorCode TryReadValue(
	ISymbol symbol,
	out Object?? value
)

Parameters

symbol ISymbol	The symbol that should be read.
value Object	The value.

Return Value

AdsErrorCode
The ADS Error Code

Implements

IAdsSymbolicAccess.TryReadValue(ISymbol, Object)

Exceptions

Exception	Condition
ObjectDisposedException
ClientNotConnectedException
ArgumentNullException	symbol
CannotResolveDataTypeException

Remarks

This method automatically marshals the read values to appropriate .NET objects if possible. The overall behaviour is described here in the interface description.

Reference

AdsClient Class TryReadValue Overload TwinCAT.Ads Namespace ReadValue(ISymbol) ReadValueAsync(ISymbol, CancellationToken)

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