AdsConnection.ReadAnyAsync Method (UInt32, Type, .Int32., CancellationToken)
Reads data synchronously 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<ResultAnyValue> ReadAnyAsync(
uint variableHandle,
Type type,
int[]? args,
CancellationToken cancel
)
Parameters
|
variableHandle |
Type: System.UInt32 |
|
type |
Type: System.Type |
|
args |
Type: .System.Int32. |
|
cancel |
Type: System.Threading.CancellationToken |
Return Value
Type: Task.ResultAnyValue.
A task that represents the asynchronous read operation. The
ResultAnyValue
parameter contains the read value (Value) and the
ErrorCode
after execution.
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 |