Timestamp and Quality Support
- Last UpdatedSep 28, 2021
- 1 minute read
When used with Plant SCADA version 7.0 or later, the OFSOPC driver supports the use of additional variable tags to obtain quality and timestamp values. Quality or timestamp tags are duplicates of a variable tag, with an appended "!Q" or "!T" or "!M" in the address field to define their purpose.
For example:
|
Address |
Plant SCADA Type |
Description |
|---|---|---|
|
[<alias>!]<item_ID>!Q |
INT |
The quality reported for the item |
|
[<alias>!]<item_ID>!T |
LONG |
The seconds component of the timestamp reported for the item (in UTC seconds) |
|
[<alias>!]<item_ID>!M |
LONG |
The milliseconds component of the timestamp reported for the item |