4
Commissioning
Weather Stations P03/3-Modbus(-GPS)
• Version: 07.06.2022 • Errors excepted. Subject to technical changes.
•
Wind measurement:
The wind strength measurement takes place
electronically and thus noiselessly and reliably, even during hail, snow and
sub-zero temperatures. Even turbulent air and anabatic winds in the vicinity of
the weather station are recorded
•
Temperature measurement
•
Heated precipitation sensor (1.2 watts): No false reports as a result of fog or
dew. Dries quickly after precipitation has stopped
•
P03/3-Modbus-GPS only:
Integrated GPS receiver. Output of UTC (Universal
Time Coordinated), position (degree of longitude and latitude) and position of
the sun (azimuth, elevation)
3.
Commissioning
3.1. Bus load
The RS485 transceiver used has 1/8 of a standard RS485 bus load (1/8 unit load) and
can manage at least a 2.4 V at 54 Ohm bus load. It can, thus, operate a bus with 32
nodes at standard bus load. If nodes with a lower load than the standard bus load are
connected to an RS485 bus, the bus can be operated with more nodes. If, for example,
only nodes with 1/8 bus load are connected, up to 32 x 8 = 256 nodes can be connected
to the bus.
3.2. Setting up bus communication
If all DIP switches are in the OFF position (default setting), the following parameters are
active:
Address: 1
Baud rate: 19,200
Parity: Even
Termination: Disabled
Fig. 1: detailed view DIP switches
Summary of Contents for 30146
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