AdsConnection.ReadAnyAsync.T. Method (UInt32, .Int32., CancellationToken)

Reads data asynchronously from an ADS device and writes it to an object.

Namespace:  TwinCAT.Ads
Assembly:  TwinCAT.Ads (in TwinCAT.Ads.dll) Version: 6.0.328+39e3229

Syntax

C#

public Task<ResultValue<T>> ReadAnyAsync<T>(
    uint variableHandle,
    int[]? args,
    CancellationToken cancel
)

Parameters

variableHandle

Type: System.UInt32
The variable handle.

args

Type: .System.Int32.
Additional arguments.

cancel

Type: System.Threading.CancellationToken
The cancellation token.

Type Parameters

T

Type of the object to be read

Return Value

Type: Task.ResultValue.T..
A task that represents the asynchronous read operation. The ResultValue.TValue. parameter contains the read value (Value) and the ErrorCode after execution.

Implements

IAdsAnyAccess.ReadAnyAsync.T.(UInt32, .Int32., CancellationToken)

Remarks

As object types only primitive types are supported. If the Type of the object to be read is a string type, the first element of the parameter args specifies the number of characters of the string. If the Type of the object to be read is an array type, the number of elements for each dimension has to be specified in the parameter args.

Type of value Parameter

Necessary Arguments (args)

string

args[0]: Number of characters in the string typed as FixedLengthZeroTerminated.

string[]

Array

Reference

AdsConnection Class

ReadAnyAsync Overload

TwinCAT.Ads Namespace