AttributeValue Class |
Represents an attribute value in memory, and acts as a base for classes that store the actual attribute value.
AttributeValue also stores attribute meta data (dimensions and properties), and provides common abstract methods
for accessing attribute values.
Typical use of AttributeValue is through an AttributeBase, which provides a strongly typed
view on the value.
Inheritance HierarchySystemObject
Demo3D.PLC.Comms.AttrDbAttributeValue
Demo3D.PLC.Comms.AttrDbAttributeValue
Namespace: Demo3D.PLC.Comms.AttrDb
Assembly: PLC (in PLC.dll) Version: 14.0.0.10531
SyntaxC#
public abstract class AttributeValue
The AttributeValue type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | AttributeValue |
Constructs an AttributeValue.
|
Properties| Name | Description | |
|---|---|---|
 | AttributeId |
Attribute ID.
|
| Dimensions |
The dimensions of the value (or null).
|
| Flags |
Attribute value flags.
|
| Gettable |
True if protocol attribute-get requests are allowed.
|
| IgnoreSet |
True if protocol attribute-set requests are allowed, but should be ignored.
|
| Memory |
Returns the underlying shared memory segment.
|
| Settable |
True if protocol attribute-set requests are allowed.
|
Methods| Name | Description | |
|---|---|---|
 | AddOnAttributeValueSet |
Add a handler for the OnAttributeValueSet event.
|
| GetValue(ArraySegmentByte) |
Protocol access to the attribute value.
Honours Gettable.
|
| GetValue(IPacketWriter, DataSelect) |
Protocol access to the attribute value.
Honours Gettable.
|
| NotifyAttributeValueSet |
Raises the OnAttributeValueSet event.
|
| RemoveOnAttributeValueSet |
Remove a handler from the OnAttributeValueSet event.
|
| SetValue(ArraySegmentByte, Boolean) | |
| SetValue(IPacketReader, DataSelect, Boolean) |
Events| Name | Description | |
|---|---|---|
 | OnAttributeValueSet |
Occurs when the attribute value is set, but only under certain circumstances (see remarks).
|
See Also