ValueSymbolExtensionsPollValues(IValueSymbol, IObservableUnit) Method

Poll symbol values on trigger signals.

Namespace: TwinCAT.Ads.Reactive
Assembly: TwinCAT.Ads.Reactive (in TwinCAT.Ads.Reactive.dll) Version: 7.0.0+e56d35ccc4675faac24789a4aab60071fc61d470

Syntax

C#

public static IObservable<Object> PollValues(
    this IValueSymbol symbol,
    IObservable<Unit> trigger
)

Parameters

symbol IValueSymbol	The symbol.
trigger IObservable Unit	The polling trigger.

Return Value

IObservable Object
IObservable<System.Object>.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IValueSymbol. 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).

Remarks

If ReadRequest errors occur, the observable will be closed with and AdsException./>

Reference

ValueSymbolExtensions Class PollValues Overload TwinCAT.Ads.Reactive Namespace PollValues2(IValueSymbol, IObservableUnit) PollValues(IValueSymbol, TimeSpan)

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