10.5
Commands
The following commands can be sent from a PC to the
WP-84
. Note that
<cr> denotes carriage return and <lf> denotes a line feed.
Action
Command
Notes
Request current data
?D<cr>
Returns the current Conductivity/
TDS/Salinity, Temperature, date and
time from the
WP-84
. The log
number returned is set to Zero.
Request logged data
?R<cr>
Returns all logged records from the
WP-84
memory. The data ends with
the message
ENDS
<cr>
Erase logged data
?E<cr>
Erases all logged records from the
WP-84
memory.
Returns
the
message
ERASED
<cr> to confirm
that the records have been erased.
Request status
information
?S<cr>
Returns the model name, firmware
version number, instrument serial
number
and
number
of
logged
readings in memory,
eg:
WP84
��
V4.0
�
S1234
�
9999
<cr>,
where
�
are spaces. Note that the
number of logged readings is right-
justified.
Request GLP
information
?G<cr>
Returns all calibration GLP
information, plus the instrument
model and current date (see section
10.6 for data format and hand-
shaking).
10.6
Data Format
Data is returned to the RS232 port by the
WP-84
in the following format.
Please note that a “
�
” shown anywhere in this section denotes one space.
LLLL
�
DDDDDDUUU
�
TTTTTToC
��
dd/mm/yy
�
hh:mm:ss
where…
LLLL
is the Log Number. Maximum 4 characters, right justified.
A Zero is sent for instant readings (section 10.2).
DDDDDD
is
the
Conductivity
/TDS/Salinity
Data.
Maximum
6
characters, right justified.
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