USER'S GUIDE____________________________________________________________________
62 __________________________________________________________________ M210482EN-D
Data Messages
To ease the use of Ceilometer CL31 and to ease the transfer from old
ceilometer versions to the new one, CL31 includes data messages used in
CT12K, CT25K, CT25KAM, and LD40. CL31 provides the following
data messages:
- CL31 Data messages 1 and 2
- CL31 Status message
- CT12K data messages No. 2 and No. 3
- CT25K data messages No. 1 and No. 6
- CT25KAM data messages No. 60 and No. 61
- LD40 Standard Telegram
Each port can be set to transmit a specified message automatically.
Alternatively, the port can be set to transmit the set message only when
polled by a predetermined polling string of characters, or the polling
string can contain the message identification.
The messages may provide a different resolution and require a different
measurement mode. A change of a message always switches into a
correct measurement mode automatically.
However, CL31 Status message and CL31 Data messages 1 and 2 of
subclass 5 (without profile data) may be used in both 10 m and 5 m
resolutions. A selection of these messages always activates the 10 m
resolution (standard mode). If needed, users can change into the 5 m
resolution (high resolution) by typing the following advanced level
command:
set data_acq meas_mode high_res. Thus, the above
messages will work in 5 m resolution.
NOTE
All characters are 7-bit USASCII.
symbolizes Carriage Return + Line Feed (2 characters) throughout this
document.
Start-of-Header, Start-of-Text, End-of-Text, End-of-Transmission,
Carriage Return, and Line Feed are non-printing characters in most
practical terminal use.
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