SystemServiceExtension.PollSystemServiceStateAsync Method

Polls the system service state asynchronously

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

Syntax

C#

public static IObservable<ResultValue<AdsSysServState>> PollSystemServiceStateAsync(
    this IAdsConnection connection,
    IObservable<Unit> trigger,
    CancellationToken cancel
)

Parameters

connection	Type: TwinCAT.Ads.IAdsConnection The client (should be an IAdsConnection on port 10000 with FastWriteThrough)
trigger	Type: System.IObservable.Unit. The trigger.
cancel	Type: System.Threading.CancellationToken The cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

Type: IObservable.ResultValue.AdsSysServState..
IObservable<ResultValue<AdsSysServState>>.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAdsConnection. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exceptions

Exception	Condition
ArgumentOutOfRangeException	Client doesn't target port 10000! - client

Reference

SystemServiceExtension Class

TwinCAT.SystemService Namespace