30
Serial Communication
Configuring Serial Communications
You can operate the flow meter remotely via
its data connection for easy streaming and
logging of all data. Before connecting the flow
meter to a computer, ensure that it is ready to
communicate with your PC by checking the
options in the
COMM SETUP
menu.
Menu
→
Advanced Setup
→
Comm Setup
Unit ID
The unit ID is the identifier that a computer
uses to distinguish your flow meter from other
similar mass flow devices when it is connected
to a network. Using the unit ID letters
A-Z
, you
can connect up to 26 devices to a computer
at the same time via a single COM port. This
is called polling mode (
). Unit ID
changes take effect when you select
SET
.
If you select @ as the Unit ID, the flow meter
enters streaming mode when you exit the
menu (see
).
✓
NOTE:
Devices equipped with Modbus
RTU will also have a Modbus ID that
can be set separately from the unit ID.
Baud Rate
Baud rate is the speed at which digital devices
transfer information. The flow meter has a
default baud rate of 19200 baud (bits per
second). If your computer or software uses a
different baud rate, you must change the flow
meter baud rate in the
BAUD
menu to match
them both. Alternatively, for computers with
Microsoft Windows® operating systems, you
can change your a computer’s baud rate in
Device Manager. Baud rate changes take effect
immediately for the device once you press
SET
,
but you may need to restart your software.
UNIT ID
BAUD
A
19200
Comm: RS232 Serial
BACK
MAIN
The Comm Setup Menu
UNIT ID
UP
DOWN
A
Unit ID
C
BACK
RESET A
SET
Setting the serial unit ID
BAUD
DOWN
UP
19200
Baud Rate
19200
BACK
SET
Setting the baud rate
