Issue
Trend log values from two or more M-bus meters under a Xenta Server are intermittently mixed up, also when viewing a trend log page in the Xenta Server's web interface.
Values from meter 1 are (sometimes) logged in meter 2's trend log and/or vice versa.
Environment
Xenta 913
Xenta 701
Xenta 711
Xenta 721
Xenta 731
M-bus meter
Cause
When secondary addressing is used for the meters, there is an extra telegram sent from the Xenta Server before asking for the actual values/data. The M-bus meters then replies to this telegram so that the Xenta Server knows which secondary address belongs to which meter. In some cases (only seen with a few meters) these addresses seems to be intermittently mixed up and this will cause the issue described above.
Resolution
Use primary addressing for the M-bus meters.
