I connected the station via USB/COM connector and everything works like a charm except the pressure reading. I found out that it is ignored because of too large value:
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2014-04-19 22:39:24.271 : Ignoring rel pressure: 2018,5
2014-04-19 22:39:24.271 : Old value = 9999,0 New value = 2018,5 EWpressurediff = 999,0
I tried to change the Cumulus callibration file, but realised that this only changes displayed value, not the reading. So my question is: how do I set the offset of the weather station reading? It was correct on HeavyWeather and is shown correctly on the station itself.
After installing Cumulus on the old PC (I managed to complete it between restarts) and connecting it via COM port (integrated with the motherboard) I didn't get the pressure reading so I assume it is not the USB/COM connectors fault.
I'd be glad for your help