Lighthouse RLPC 0.1mm, Operating Manual

Page: 34 / 60

Lighthouse REMOTE Liquid Particle Counter (4-20mA output) Operating Manual
4-4 248083296-1 Rev 3
Connecting
the
Instrument to
a Terminal
The RJ-45 connector on the instrument (marked "Programming Port" in
Figure 4-3) is used to interconnect the unit with a COM port on a
desktop or laptop PC. Once connected and set up as an ASCII
terminal, the PC can be used to program and/or monitor the instrument
settings.
Figure 4-3 The Programming Port, Showing Pin Numbers
A modular adapter, RJ-45 to DB-9, is available from Lighthouse. The
pinouts of the adapter are shown in the table below:
To connect the instrument to a computer:
1. Remove power from the instrument.
2. Connect the RJ-45 end of the adapter cable to the Programming
Port on the instrument.
3. Connect the DB-9 end of the cable to a COM (Serial) Port on a
computer or use an optional USB to RS232 cable.
4. Open Hyperterminal on the computer.
5. Configure the COM Port settings as follows. Any available COM
Port may be used:
Table 4-1 RJ-45 to DB-9 Connections
RJ-45 Pin Signal Name DB-9 Pin
1 TX 2
2 RX 3
8 Ground 5
Programming
Port
8 1