Properties

Item which contains a value of a state

The PersistenceItem item type has the following properties:

NameDescriptionIDFlags
PersistenceHierarchy

A string array containing the persistence hierarchy.

10200Persisted
Quality

Item quality - this tells you whether an item currently has a good or bad quality. It might be bad, for example, because it isn't connected or is set to the wrong type.

3ReadOnly
Rights

Item access rights - this property may be "read", or "read write". This means that the property may only be read from, or also can be written to. For OPC items, this written value will be passed on to the external items this item comes from.

5ReadOnly
Time

The date and time when this item was last updated.

4ReadOnly
Type

The item canonical data type - the specific type of this item. Whether it's an integer, string, date, etc.

1ReadOnly
Value

The current value of the item.

2NormalPage
Valuetype

Item canonical datatype. This is the type of data the field holds. For example: integer, string, datetime, etc.

10100Persisted, Enumerated

See also

Basic Item Properties

Predefined Item Properties

OPC DA Properties