Quality codes¶
Description¶
The quality code measures the quality of the connection from a data provider to the MindConnect element. This means that a value with quality code <> not equal to TRUE is ignored in the app, because the quality code is not transferred to the platform. This value is not included in the aggregation, not included in the calculation of KPIs, and not included in the dashboard.
The following table is based on the OPC UA standard and shows the quality codes possible for OPC UA and S7:
| Quality code (hex) | Quality code (dec) | Quality | Description |
|---|---|---|---|
| 0x00000000 | 0 | GOOD | Good quality All values could be read. |
| 0x00BA0000 | 12189696 | GOOD_INCOMPLETE | Good quality Values may be incomplete. A least 1 value could be read. |
| 0x002F0000 | 3080192 | GOOD_OVERLOAD | The sampling interval has slowed down due to resource constraints. |
| 0x40920000 | 1083310080 | UNCERTAIN_INITIAL_VALUE | Uncertain initial value Quality of the value is worse than usual. It might still be possible to use the value. |
The quality code has the binary 8-bit structure QQSSSSLL.
- Digits 1 and 2 (QQ) define the quality of the value.
- Digits 3 to 6 (SSSS) specify the sub-status of the quality.
- Digits 7 and 8 (LL) are optional and define possible limits.
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