50 51
MODEM CONNECTION
A momodem connection can be established between
HI504910 and a remote computer over a telephone line. It
is possible to make two different type of remote connection:
• Over the GSM network, connecting the HI504900 cel-
lular module to HI504910 RS485 port.
To enable the modem connection with HI504900 first it is
necessary to configure the cellular phone: set item P.01 with
the PIN code of the SIM card in the HI504900 module and
then set item P.00 to “CELL”. To complete the configuration
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 HI504910 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
HI504910 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.
The modem connection (both with HI504900 and
HI504902) allows the user to ask the controller from a re-
mote position about its status, measurements and to change
some parameters.
Many devices can be monitored through a remote modem
connection, simply connecting all the devices and the mo-
dem or cellular module to the same RS485 network.
Only one device has to be configured through O.31 to an-
swer to modem calls. That device will be the one controlling
the modem or the cellular module. To avoid conflicts, the
following must never be done:
• put more than one modem or cellular module in the same
RS485 network;
• set O.31 to “On” in more than one device in the same
RS485 network;
• set P.00 to “CELL” in more than one device in the same
RS485 network
• set O.31 to “On” in one device and P.00 to “CELL” in
another one within the same RS485 network;
• put a PC monitor within the RS485 network.
Provided the above, any Hanna instrument with RS485 port
can be attached to the network and monitored remotely.
