AdsSymbolicServer.OnReadWriteIgIoAsync Method

Handler function for handling of pure IG/IO calls.

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

Syntax

C#

protected virtual Task<ResultReadWriteBytes> OnReadWriteIgIoAsync(
    AmsAddress sender,
    uint invokeId,
    uint indexGroup,
    uint indexOffset,
    int readLength,
    ReadOnlyMemory<byte> writeData,
    CancellationToken cancel
)

Parameters

sender	Type: TwinCAT.Ads.AmsAddress The sender address of the request.
invokeId	Type: System.UInt32 The invoke identifier of the request.
indexGroup	Type: System.UInt32 The index group of the requested ADS service
indexOffset	Type: System.UInt32 The index offset of the requested ADS service
readLength	Type: System.Int32 Number of bytes to be read
writeData	Type: System.ReadOnlyMemory.Byte. The data to be written
cancel	Type: System.Threading.CancellationToken The cancellation token.

Return Value

Type: Task.ResultReadWriteBytes.
A task that represents the asynchronous 'OnReadWriteIgIoAsync' operation. The Task.TResult. parameter contains the AdsErrorCode as Result.

Exceptions

Exception	Condition
NotImplementedException

Remarks

Overwrite this method in derived classes to react on pure IG/IO ADS ReadWrite indications. To send the ADS answer/response back to the sender, the base class implementation must be called after

Reference

AdsSymbolicServer Class

TwinCAT.Ads.Server Namespace