Rs485 Communication & Data Logging - Hanna Instruments HI21 Series Instruction Manual

RS485 COMMUNICATION
SPECIFICATIONS
28
HI21XY2, HI21XY3 and HI22XY2 are provided with an
RS485 port.
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
software offered by Hanna Instruments.
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.
HI92500 makes it possible for you to use the powerful
means of the most diffused spreadsheet programs (Excel
Lotus 1-2-3 etc.). Simply run your favorite spread sheet 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 3.5" drive and few minutes
to follow the instructions conveniently printed on the disk's
label.
Contact your local Hanna Instruments Office to request
a copy.
The RS485 standard is implemented in HI21/HI22 with the
following characteristics:
Data rate:
Communication:
Line length:
Loads:
Internal termination: none
Excel Copyright of "Microsoft Co."
©
Lotus 1-2-3 Copyright of "Lotus Co."
©
Windows registered Trademark of "Microsoft Co."
®
compatible application
®
up to 9600 bps
Bidirectional Half-Duplex
up to 1.2 Km typ. with 24AWG cable
up to 32 typ.
,
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