4.3811.00.000_US-Anemometer-DSP_eng.doc
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021511/10/06
7.1.1 General telegram structure
For serial communication the ULTRASONIC has a fixed telegram format which also permits
communication in bus mode. It has the following form:
NNBB<cr>
<cr> stands for Carriage Return (Enter key)
for a data enquiry or
NNBBPPPPP<cr>
<cr> stands for Carriage Return (Enter key)
for a parameter change.
The individual letters have the following meaning:
NN:
Two-position ID of the ULTRASONIC. It can be selected in the range 00 to 99. The
presetting of the ID is '00'.
PPPPP:
If a new parameter is to be set, the parameter is changed with a 5-position value. The
parameter is always right-justified; i.e. it thus has to be padded from the left with zeros.
Example:
Telegram No. 4 is to be interrogated. The relevant command is:
00TR00004<cr>
<cr> stands for Carriage Return (Enter key)
The prerequisite is that the ULTRSONIC ID has the value '0'.
Example:
With the command
00BR<cr>
<cr> stands for Carriage Return (Enter key)
the data record selected for the baud rate is returned.
!00BR00006
Note:
The input buffer of the ULTRASONIC can be emptied by transmitting Carriage
Return <CR>. If the ULTRASONIC possibly has invalid characters in the input
buffer, the input buffer can be processed by transmitting Carriage Return. In this
case it is recommended transmitting a Carriage Return at the beginning of a
telegram, e.g.:
<cr>00BR<cr>
<cr> stands for Carriage Return (Enter key)
