AdsServerOnReadAsync Method
Called when an ADS Read indication is received.
Namespace: TwinCAT.Ads.Server
Assembly: TwinCAT.Ads.Server (in
TwinCAT.Ads.Server.dll) Version:
7.0.0+e56d35ccc4675faac24789a4aab60071fc61d470
Syntax
C#
protected virtual Task<ResultReadBytes> OnReadAsync(
AmsAddress sender,
uint invokeId,
uint indexGroup,
uint indexOffset,
int readLength,
CancellationToken cancel
)Parameters
|
sender AmsAddress |
The sender address of the request. |
|
invokeId UInt32 |
The invoke identifier of the request. |
|
indexGroup UInt32 |
The index group of the requested ADS service |
|
indexOffset UInt32 |
The index offset of the requested ADS service |
|
readLength Int32 |
The number of bytes to be read |
|
cancel CancellationToken |
The cancellation token. |
Return Value
Task
ResultReadBytes
A task that represents the asynchronous ReadIndicationAsync(AmsAddress, UInt32, UInt32, UInt32,
Int32, CancellationToken) operation. The TaskTResult
parameter contains the AdsErrorCode as
Result.
Remarks
Overwrite this method in derived classes to react on ADS Read indications. The default implementation replies with an ADS ServiceNotSupported error code (0x701).