Properties

HiddenItem

The HiddenItem item type has the following properties:

NameDescriptionIDFlags
AlarmAreaThe default alarm area for the item.10100Persisted
ProcessUnitThe PDS process unit associated with this item. A process unit can be a piece of equipment or location, among other things.5716Persisted, ReadOnly
QualityItem 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
RightsItem 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
SrcItemIDThe item ID in the source. This is the item ID this item uses to fetch data from the source.5030Persisted
TimeThe date and time when this item was last updated.4ReadOnly
TypeThe item canonical data type - the specific type of this item. Whether it's an integer, string, date, etc.1ReadOnly
ValueThe current value of the item.2ReadOnly
ValueAssignmentAssign the item to one of the OPC Event data.10200Persisted, Enumerated

See also

Basic Item Properties

Predefined Item Properties

OPC DA Properties