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 MindSphere as well. 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.