57
PC COMMUNICATION
RS485 standard is a digital transmission method that allows
long lines connections . Its current-loop system makes this
standard suitable for data transmission in noisy environ-
ments .
Data transmission from the instrument to the PC is pos-
sible with the
HI92500
Windows
®
compatible application
software offered by Hanna Instruments and an RS232 to
RS485 adapter with Send Data Control connected to the
serial port of your PC .
The user-friendly
HI92500
offers a variety of features such
as logging selected variables or plotting the recorded data .
It also has an on-line help feature to support you throughout
the operation .
The readings logged into the
HI504
internal memory can
be downloaded through
HI92500
.
HI92500
makes it possible for you to use the powerful
means of the most diffused spreadsheet programs . Simply
run your favorite spreadsheet program and open the file
downloaded by
HI92500
. It is then possible to elaborate the
data with your software (e .g . graphics, statistical analysis) .
To install
HI92500
you need a few minutes: just insert the
installation CD into the PC and the software menu window
should start automatically (if it does not, go to the main CD
folder and double-click “setup .exe”) . Click “Install software”
and follow the instructions .
Contact your local Hanna Instruments Office to request
a copy .
SPECIFICATIONS
The RS485 standard is implemented in
HI504
with the
following characteristics:
Data rate
:
up to 19200 bps (manually selected)
Communication
:
Bidirectional Half-Duplex
Line length
:
up to 1 .2 Km typ . with 24AWG cable
Loads
:
up to 32 typ .
Internal termination
: none
Windows
®
registered Trademark of “Microsoft Co.”
