User Guide

58
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 environments.
Data transmission from the instrument to the PC is possible
with the HI 92500 Windows
®
compatible application soft-
ware 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 HI 92500 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 HI 504 internal memory can
be downloaded through HI 92500.
HI 92500 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 HI 92500. It is then possible to elaborate the data with
your software (e.g. graphics, statistical analysis).
To install HI 92500 you need a 3.5" drive and few minutes
to follow the instructions conveniently printed on the disk’s
label.
Contact your Hanna Dealer to request a copy.
SPECIFICATIONS
The RS485 standard is implemented in HI 504 with the fol-
lowing 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.”