The Tag Status element is used to represent the current status of the tag. The value of this element is affected only for those tag operations that involve a physical device (for example, writing to the Field element will affect the status element, but writing to the Control Mode will not). Tag Status element is reset after I/O Server restart. The element value contains a set of bit flags.
The following table describes the Tag Status element:
| Reference Syntax | CitectSCADA
Data type |
Description |
|---|---|---|
| TagName.Status | INT | Value of Tag Status element |
| TagName.Status.V | INT |
Value A set of bit flags representing the following data: - 0x1: Read Pending. - 0x2: Write Pending. - 0x4: Write Successful. - 0x8: Write Unsuccessful. Default value: 0. |
| TagName. Status.VT | TIMESTAMP | Timestamp of when the value last changed |
| TagName.Status.Q | QUALITY | Quality |
| TagName.Status.QT | TIMESTAMP | Timestamp of when the quality last changed |
| TagName.Status.T | TIMESTAMP | Timestamp of when the element was last updated |