WE2107 - Communication commands
142
I1820-1.3 enHBM
NOTE
It is essential to output the semicolon before the command S98;, as controlling the WE at
different baud rates may result in undefined characters in the WE input buffer. These
characters are rejected when the semicolon is received.
With S98; none of the WEs respond; but each WE executes the command.
In the example given above, all the WEs on this bus are set to the baud rate 9600Bd,
whatever their previous settings.
Of course, it is also possible to set a different baud rate. To do this, provide the required
baud rate in the command BDR
and modify the initialization of the master interface
accordingly.
Transfer time at the interface
The baud rate is the speed of transfer of the interface. This does not change the number of
measured values that the WE determines every second.
A high baud rate merely allows a greater number of WEs to be queried per time unit in bus
mode.
Baud rate
Transfer time for one character
9600 1.1 ms
19200 0.57 ms
With this information, it is possible to roughly estimate the transfer time for a command
sequence. To do this, establish the number of characters in the command and multiply it by
the transfer time. In addition to this, the WE has a processing time (reaction time) for each
command. You will find these times in the individual command descriptions (total time =
transfer time + processing time).
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