Are there any known issues with getting the gps altitude over modbus? The value I am receiving is not correct. I am receiving many other values over modbus correctly.
Thanks.
asked
GPS Altitude Via Modbus?
Hi mattintheusa,
What value are you receiving and what value do you expect? I don't think modbus is the problem but maybe the NMEA messages coming from the GPS unit. You might be looking at the geoid height instead of the elevation above sealevel. Both are send in various NMEA strings so maybe something is just misconfigured.
On my end i was able to carry on all GPS data including the elevation
#####################
#GPS
- name: "V-2800-GPS-Latitude"
slave: 100
address: 2800
data_type: int32
scale: 0.0000001
precision: 8
- name: "V-2802-GPS-Longitude"
slave: 100
address: 2802
data_type: int32
scale: 0.0000001
precision: 8
- name: "V-2808-GPS-Altitude"
slave: 100
address: 2808
data_type: int32
scale: 0.1
precision: 0
unit_of_measurement: "m"
On my end i was able to carry on all GPS data including the elevation
#####################
#GPS
- name: "V-2800-GPS-Latitude"
slave: 100
address: 2800
data_type: int32
scale: 0.0000001
precision: 8
- name: "V-2802-GPS-Longitude"
slave: 100
address: 2802
data_type: int32
scale: 0.0000001
precision: 8
- name: "V-2808-GPS-Altitude"
slave: 100
address: 2808
data_type: int32
scale: 0.1
precision: 0
unit_of_measurement: "m"
If you have a nmea 0183 gps on the network, you can do that which is very easy. See this post.
https://community.victronenergy.com/questions/17470/venus-gx-to-pull-gps-coordinates-from-onboard-rout.html
