Lighthouse RLPC 0.1mm, Operating Manual

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Lighthouse REMOTE Liquid Particle Counter (4-20mA output) Operating Manual
4-6 248083296-1 Rev 3
7. Ensure that all DIP Switches are set to 0 (OFF/DOWN).
Power Up
If DIP Switches all = 0 ==> Program Mode:
During the first 20 seconds after power is applied, the unit waits for
programming commands. If no commands are received within that
time, the instrument recalls its last stored parameters (or default
settings) and continues to use them.
If a programming command is received within the first 20 seconds, the
command is examined and, if valid, the parameters are set and stored in
non-volatile memory, overwriting the previous parameters for that
command.
The instrument waits another 20 seconds for the next command and the
process repeats for each command that is sent. After the last command,
the timer times out and the instrument is loaded with the commands
that were issued. Old parameters are used if they were not modified
during this session.
Once programmed, the instrument retains its settings until they are
modified. The user can set DIP Switch 8 to ON (UP, 1) to eliminate the
20 second timer when the unit is next powered up.
Lighthouse recommends before powering up the instrument to make a
list of the commands and parameters to use, avoiding any unwanted
timeouts.
Session
Example
The following steps should be performed to program the instrument or
check its settings using the ASCII terminal.
1. Set all DIP Switches to OFF (DOWN, 0) to program the instrument
and connect it to the ASCII terminal.
2. Apply power to the instrument. The Hyperterminal programming
prompt is sent from the unit.
Note:
Capital V. The
< and > characters are
needed; they mark the
beginning and end of the
command.
3. Type:
<V>
-- this is Verbose mode. This must be the first
command sent to see responses from the
instrument
4. Type:
<?>
-- the unit ’ s current settings are displayed .
<?>
Flow Rate = 0.1 cfm
Sample Time = 5 secs
Range1= 10000.