Today’s test: Query Current Power (Register 30775, length =2)
Result:
2021-04-21 14:35:19.394 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'CurrentPowerSB2500_ValueasNumber' changed from 959 to 967
2021-04-21 14:35:29.614 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'CurrentPowerSB2500_ValueasNumber' changed from 967 to 978
2021-04-21 14:35:39.855 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'CurrentPowerSB2500_ValueasNumber' changed from 978 to 990
2021-04-21 14:35:50.030 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'CurrentPowerSB2500_ValueasNumber' changed from 990 to 1002
My conclusion:
Lower byte now included in the result.
PM
If more evidence is required, let me know what additional testing should be done.