TPS WP-81 - Commands

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11.5 Commands
The following commands can be sent from a PC to the WP-81. 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, pH, Temperature, date
and time from the WP-81. The log
number returned is set to Zero.
Request logged data
?R<cr>
Returns all logged records from the
WP-81 memory. The data ends with
the message ENDS<cr>
Erase logged data
?E<cr>
Erases all logged records from the
WP-81 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: WP81V1.0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
11.6 for data format and
handshaking).