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Weather Station Hardware => Davis Instruments Weather Stations => Topic started by: itsokforme on August 17, 2018, 04:23:09 AM

Title: Modbus connection WEEWX Vantage through KTA-282 module
Post by: itsokforme on August 17, 2018, 04:23:09 AM

Good morning ,

I have a Vantage Pro 2 weather station with the Envoy logger and through the serial connection a KTA-282 Modbus module from Ocean Controls.

Now I would like to access from Weewx on raspberry the Davis, but the Vantage driver have not the right access parameters to do that : there is someone that already have solved this problem ? Or someone the knows the driver could suggest the modification to do ?

The modbus module answer as a client on an local ip address and the port 502 with the mode3 ( read registers from location 40000+1).

Thanks

Guido

Title: Re: Modbus connection WEEWX Vantage through KTA-282 module
Post by: johnd on August 17, 2018, 05:01:28 AM

You'd probably be better off asking on the weewx-users forum on Google groups.

AFAIK, KTA-282 doesn't pass through any Davis protocol so you would need a weewx driver that polls the Modbus registers. It shouldn't be too difficult to do but TBH I kind of doubt that anyone has ever done this - it's such a niche application. But someone on the weewx-users or weewx-developers groups is more likely to know for sure.

Title: Re: Modbus connection WEEWX Vantage through KTA-282 module
Post by: itsokforme on August 17, 2018, 05:08:49 AM

Thanks !