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The vectorial and scalar averaging procedure for wind velocity and wind direction can be selected
via the command
AM
like
Average Method
.
Command for selecting the averaging procedure:
AM00000
vectorial averaging of velocity and direction.
AM00001
scalar averaging of velocity and direction.
7.4 Serial data output
Data transmission via the RS485 interface is referred to as serial data output. Two modes are
available for transmission of the data:
•
Autonomous transmission of data.
•
Transmission of data via request telegram.
Autonomous transmission of the data is selected using the command 00TT000XX, with XX
standing for the relevant telegram number. In this case the WEATHER STATION transmits its data
cyclically at the repeat rate selected with the parameter OR.
7.4.1 Data request
Command TR is used to request data from the WEATHER STATION. This command has no
access protection. After processing the command the device sends back a response telegram. The
time between the last sign in the request telegram and the first sign in the data telegram is pre-set
for the „full-duplex“ operation to at least 5ms, and for the „half-duplex“ operation to at least 20ms,
see also command RD.
The telegrams as described under ‚
are available as data telegrams.
7.4.2 Autonomous telegram output
Autonomous telegram output is selected with the command TT. After a valid telegram type has
been input, the WEATHER STATION autonomously transmits the data telegram selected. The
transmission interval is set in ms using the command OR. By default, one telegram each second is
sent. If the selected baud rate exceeds the output cycle (the time for data transmission is greater
than the interval), telegram output may not be possible.
