Hanna Instruments HI 504901 - Manual (Page 24)

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nection. To connect the HI504901 supervisor to PC use an
HI920010 cable. Plug the connectors, one to the supervi-
sor RS232 auxiliary connector (PC config port), and the other
one to a serial port of the PC.
REMOTE COMMUNICATION
This type of communication session takes place between the
HI504901 device and one remote PC with the HI92500
application software installed, through a data call made by a
modem connected to the PC. The incoming call is answered
by the interface and then a seamless data connection will be
established between any connected instrument and remote
computer. In this way it is possible to monitor a meter even if
it is placed long far from the operator position.
Note During remote communication, yellow LED for cellular status
(when available) blinks fast to indicate data call in progress.
Note HI504901 will be able to establish a remote communica-
tion only if the used SIM card is enabled for data call. Please
contact the cellular phone network operator for active ser-
vices on the used SIM card.
No connection can be established towards an instrument not
configured on HI504901 interface, even if electric wiring is
correctly performed between HI504901 and the instrument
itself. Please refer to the HI92500 on-line help for more
details.
Note If mains power supply failure occurs on HI504901 side while
a PC communication session is taking place, HI504901
enters in power failure status (see “Power failure status” sec-
tion) and communication session is immediately aborted.
Moreover, in remote communication case cellular phone
hangs up and telephone line is released.
Note While a PC communication session towards a remote com-
puter is taking place, devices connected to HI504901 are
not polled. So if some new alarms occur meanwhile, no SMS
is sent by the phone interface. Configured alarm messages
are sent when the connection ends, if the correspondent alarm
is still active. Also information messages are temporarily sus-
pended.
PC COMMUNICATION
HI504901 interface can act as a gateway for a connection
through a remote computer. With this feature a seamless data
connection will be established between a computer and what-
ever instrument connected and previously correctly configured
on the HI504901 interface through HI504901SW appli-
cation software (see “Interface configuration” section).
Through a PC communication session it is possible to down-
load on the PC all information, alarms and fault conditions
regarding all instruments connected to HI504901 through
only one data communication link towards HI504901 in-
terface (no need to perform as many data links as many
instruments have to be queried). Actually, once data call is in
progress, the user can select with which instrument (con-
nected to the interface) he wants to communicate and switch
among the various instruments at any time.
There are two ways for establishing a PC communication
session: the “local” one with a serial cable, and the “remote”
one through a modem connected to the PC (see below).
Data transmission to the PC from instruments connected to
the interface (both local and remote) is possible with the
HI92500 Windows
® compatible application 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
is also provided with an on-line help feature to support the
user through the operation.
HI92500 makes it possible to use the powerful means of the
most diffuses spreadsheet programs (Excel
© , Lotus 1-2-3 © , etc.).
Simply run the favorite spread sheet and open the file down-
loaded by HI92500. It is then possible to elaborate the data
with the selected software (e.g. graphics, statistical analysis).
To install HI92500 are required only a 3.5” drive and a few
minutes to follow the instructions printed on the disk label.
Contact your Hanna Dealer to request a copy.
LOCAL COMMUNICATION
This type of communication session takes place between the
HI504901 device and one (placed near) PC with HI92500
application software installed, towards a serial cable con-