IAdsHandleAccess.TryRead Method

Reads data synchronously from an ADS device and writes it to the given stream.

Namespace: TwinCAT.Ads
Assembly: TwinCAT.Ads (in TwinCAT.Ads.dll) Version: 4.3.0.0

Syntax

C#

AdsErrorCode TryRead(
    int variableHandle,
    AdsStream dataStream,
    int offset,
    int length,
    out int readBytes
)

VB

Function TryRead ( 
    variableHandle As Integer,
    dataStream As AdsStream,
    offset As Integer,
    length As Integer,
    <OutAttribute> ByRef readBytes As Integer
) As AdsErrorCode

Parameters

variableHandle	Type: System.Int32 Handle of the ADS variable
dataStream	Type: TwinCAT.Ads.AdsStream Stream that receives the data.
offset	Type: System.Int32 Offset of the data in dataStream.
length	Type: System.Int32 Length of the data in dataStream.
readBytes	Type: System.Int32. Number of successfully returned data bytes.

Return Value

Type: AdsErrorCode
AdsErrorCode

Exceptions

Exception	Condition
ArgumentException

Reference

IAdsHandleAccess Interface

TwinCAT.Ads Namespace