Properties

Used to count selected type defined in the module property

The Counter item type has the following properties:

Name Description ID Flags
CounterMaxValue The maximum value of the counter. When the maximum value is reached, the counter is reset to '1'. 10007 Persisted
CounterType The type of counter to use: NewDoc - reports when a new document type received; ValueChange - counts the changes to a specific element or attribute; SpecificValueSet - counts specific values received on a given element or attribute. 10006 Persisted, Enumerated
ItemHandle The handle of the item - this is the unique ID for the item. This property is often hidden. 10002 Persisted
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. 3 ReadOnly
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. 5 ReadOnly
Time The date and time when this item was last updated. 4 ReadOnly
Type The item canonical data type - the specific type of this item. Whether it's an integer, string, date, etc. 1 ReadOnly
Value The current value of the item. 2 NormalPage
XPath The XPath syntax is used to access the element or attribute in the recevied XML document. 10004 Persisted

See also

Basic Item Properties

Predefined Item Properties

OPC DA Properties