Lighthouse Remote 3014PN, Operating Manual

Page: 61 / 84

Programming with MODBUS Protocol
248083317-1 Rev 4 5-3
The instrument will continue running samples at the configured sample
time until it receives a stop command. When the stop command is
given, the most current data will not record to the buffer.
After setting all the instrument parameters as described in “Changing
the Default Instrument Parameters” on page 5-5, write these commands
to the Command register (40002):
11 Start Instrument; to start pump and recording
12 Stop Instrument; to stop pump and recording
MANUAL Counting Mode
In Manual counting mode, the computer starts the sample and the
instrument continues counting until a stop command is given. At that
point, the sample time is listed at whatever the time interval was
between the start command and the stop command.
Write these commands to the Command register (40002):
7 Start Pump - must be sent before ’ 9 ’, below
8 Stop Pump - must be sent after ’ 10 ’ below
9 Start Instrument ; to start recording (does not start pump - see ’ 7 ’).
10 Stop Instrument ; to stop recording after desired sample time (does
not stop pump - see ’ 8 ’).