Hanna Instruments HI 504 - Manual (Page 40)

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MODEM CONNECTION
A modem connection can be established between HI504
and a remote computer over telephone line. It is possible to
make two different type of remote connection:
• Over the GSM network, connecting the HI504900 cellu-
lar module to HI504 RS485 port.
To enable the modem connection with HI504900, first
configure the cellular phone (refer to “Short messaging service”
section for more details) and in particular set item P.00 to
“CELL” and finally set item O.31 (“Modem calls answer
enable”) to “On”.
Note A SIM card able to receive data calls must be used.
• Over a standard analog telephone line, connecting the
HI504902 modem module to HI504 RS485 port.
To enable the modem connection with HI504902, first set
item P.00 to “PC”, then set item O.31 to “On” and finally set
item O.32 with the dialing code of the country where the
instrument is installed (for example “049” for Germany or
“001” for United States).
Note The HI504902 modem module must be connected to HI504
RS485 port (not necessary to telephone line) and switched on
while the previous configuration is carried out.
Note If the country code is shorter than 3 characters, fill the code
with zeros in front (for example the country code “49” must
be entered as “049” or the country code “1” must be entered
as “001”).
Note The modem present in the HI504902 module is Telecom
certified for working in all the following countries: Argentina,
Australia, Austria, Belgium, Brazil, Canada, Chile, China,
Cyprus, Czech Republic, Denmark, Finland, France,
Germany, Greece, Hong Kong, Hungary, Iceland, India, In-
donesia, Ireland, Israel, Italy, Japan, Korea, Liechtenstein,
Luxembourg, Malaysia, Mexico, Netherlands, New Zealand,
Norway, Philippines, Poland, Portugal, Russia, Singapore,
Slovak Republic, South Africa, Spain, Sweden, Switzerland,
Taiwan, Turkey, United Kingdom, United States.
If your country is not present in the list, please contact your
Dealer.
reset when the expiration date is changed. If the expiration
date is reached without any updating of the items P.07 - P.09,
then the “Cellular error” will be switched on and no more
messages will be sent by the instrument until the error is
disactivated.
To disactivate this error it is necessary to update the SIM expi-
ration date.
If the user has unlimited credit on the SIM card, the item P.04
has to be set to “222”, which is interpreted by the instrument
as unlimited number of SMSs that can be sent. In this case
the value of remaining messages will not be decremented
and no check will be performed on the SIM card expiration
date. Moreover, at the beginning of each SMS it will not be
present the remaining-messages information (“Rem_msg:
xxx”).
Note It is possible to ask information (about the current pH, ORP
and temperature readings and active errors) to the HI 504
also from a cellular phone different from the one(s) selected
through the item P.02 (and P.03). This is accomplished by
sending to the instrument the SMS “+Pxx”, where “xx” indi-
cates the ID of the HI 504 (setup item G.11).
The instrument will recognize the command and reply send-
ing the requested information.
Note If a communication problem occurs during the normal func-
tioning of the instrument, the “Cellular error” will be switched
on and no SMS can be submitted until this error will be
disactivated (when this error occurs, the instrument will try
repeatedly to initialize the cellular engine and the error will
be disactivated only after a successful initialization, or if the
SMS service is disabled by setting item P.00 to “PC”).
Note All the settings of the SMS group in the Setup menu are the
same for both pH and ORP configuration.