Properties

Scalar value of arbitrary type.

The Scalar item type has the following properties:

NameDescriptionIDFlags
InputValue

If true, this item is an input value into the Java-application (Write). If it's set to false, then this value is an output from the Java-application (Read).

10030Persisted
Itemtype

Decides which type (e.g. Double, String, Bool) the item is to be. (Bool=10, Double=20, String=30)

10020Persisted, Enumerated
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

See also

Basic Item Properties

Predefined Item Properties

OPC DA Properties