Demo3D.PLC.Comms.Tag Namespace |
The Demo3D.PLC.Comms.Tag namespace provides features to access PLCs which expose a tag-based protocol or API.
Classes| Class | Description | |
|---|---|---|
 | DirectTag |
Access to a PLC tag.
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| DirectTagBatchNotify |
An object for batching data changed notifications.
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| MultipleChannelTagService |
Creates one INotifyTagService from multiple INotifyTagService channels of data.
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| NotifyDirectTagAccess | |
| NotifyDirectTagAccessParameters |
The pertinent parameters of a subscription.
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| NotifyDirectTagAccessServerSubscription |
Represents one schedule or subscription object that we've created in the server.
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| NotifyDirectTagAccessTagNotifier |
An object for notifying tag data changes.
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| NotifyDirectTagAccessSymbolType, ServerTagType |
Manages tag access.
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| NotifyDirectTagAccessSymbolType, ServerSubscriptionType, ServerTagType |
Manages server subscriptions.
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| Tag |
Access to a PLC tag.
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| TagAccess |
Access to a PLC tag. May implement INotifyDataChanged and/or IDataChangedNotifier, depending on the service.
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| TagConversion |
The tag and IO data types and their data conversion context providers.
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| TagServiceExtensions |
A class containing extension methods for ITagService.
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| TagValueChangedEventArgs |
An event reporting the change in value of a tag.
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| TagValuesChangedEventArgs |
An event reporting a change in data across a list of addresses.
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| VectoredTagAccess |
A vectored tag access.
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| VectoredTagRequestT |
A vectored tag request.
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| VectoredTagRequestsExtensions |
Extensions to VectoredTagRequest for tags.
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| VectoredTagServiceExtensions |
A class containing extension methods for IVectoredTagServiceT.
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Interfaces| Interface | Description | |
|---|---|---|
 | IDirectTagAccessService |
PLC tag client service for clients that do not notify when tag data changes.
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| IDirectTagService |
Protocol service for providing access to the tag data in the peer (bypassing any caches).
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| INotifyDirectTagAccessService |
PLC tag client service for clients that do notify when tag data changes.
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| INotifyTagService |
Protocol service for providing cached access to tags in a peer that will notify when a tag value changes.
INotifyTagService.DataChanged callbacks will pass TagValuesChangedEventArgs.
The TagAccess returned from INotifyTagService.GetTag implements INotifyDataChanged which will pass TagValueChangedEventArgs.
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| ITagService |
Protocol service for providing access to the tag data in the peer.
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| IVectoredTagServiceT |
Protocol service for providing vectored access to the tag data in the peer.
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| NotifyDirectTagAccessIServerTag |
Server tag interface.
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Delegates| Delegate | Description | |
|---|---|---|
 | DirectTagBatchNotifyDelegate |
Action to call when a tg changes.
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