Properties
External source item from an OPC AE Server
The OPCAEItem item type has the following properties:
| Name | Description | ID | Flags |
| AlarmArea | The default alarm area for the item. | 10100 | Persisted |
| ProcessUnit | The PDS process unit associated with this item. A process unit can be a piece of equipment or location, among other things. | 5716 | Persisted, ReadOnly |
| 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 |
| SrcItemID | The item ID in the source. This is the item ID this item uses to fetch data from the source. | 5030 | Persisted |
| 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 | ReadOnly |
| ValueAssignment | Assign the item to one of the OPC Event data. | 10200 | Persisted, Enumerated |