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6.2.11 Command SH
<id>SH<parameter><CR>
Station height
Access:
Read / write.
Description:
The command is used to select the altitude at the location where the
Weather Station is installed.
This value is used to calculate the relative air pressure.
Height is specified in metres.
If the set parameter is 3001, the relative air pressure with elevation is
calculated from the GPS data.
Parameter description:
Height above MSL in metres
0...3000:
Station height in metres (the basis for calculation of the
relative air pressure)
3001:
The parameter SH is disregarded (calculation of the
relative air pressure is based on the height from the
GPS data)
Value range:
0...3001
Initial value:
0
Remark: GPS determines ellipsoidal heights above the reference
ellipsoid (==> World Geodetic System WGS84). From 36m (in
Western Pomerania) up to 50m (in the Black Forest and in the Alps)
the ellipsoidal heights in Germany are higher than the heavy-related
heights (NN, HN, NHN).
That means, there are regional elevation errors which can be avoided
by manual entry.
Moreover, it must be considered that the GPS altitude values can be
subject to a change of up to 30m (referred to the WGS8 ellipsoid).
6.2.12 Command SV
<id>SV<CR>
SW-Version
Access:
Read.
Description:
The software version can be read by means of command SV.
Parameter description:
-
Response telegram:
-
Value range:
-
Initial value:
-
