DKG-319 User Manual V-27
(14.04.2011)
- 20 -
6.14 Modem Connection
The unit is capable of making modem calls in case of alarm, as well as answering modem
calls made from a remote location.
GSM
modems and classic cable network (
PSTN
) modems are
acceptable.
If the modem is connected to the unit, the
Modem Enable
program parameter should be set
to 1, otherwise faulty operation may occur.
A maximum of 2 telephone numbers can be defined for outgoing modem calls. In case of
alarm, the unit will attempt to reach control centers associated with each number. In case of modem
connection failure, the call will be repeated up to 30 times with 2 minute intervals.
When the modem call is in progress, a telephone icon (
) will appear at the upper right
corner of the screen.
If
Modem Enable
or
SMS Enable
or
MODBUS Address
parameters are different
from zero, the local PC connection will not work.
Advised modems are DATAKOM types which are powered up from the same DC battery
voltage than the unit. Most of other desktop modems with standard AT commands are also usable, but
it is the user’s responsibility to provide an uninterrupted AC supply source to the modem. The
necessary modem cable will be supplied by DATAKOM.
Modem calls are always terminated by the central RAINBOW software. However the unit does
not allow connection durations exceeding 2 minutes, and hangs up the modem when this period
expires.
The PC program used for remote monitoring and programming is the same RAINBOW
software used for RS-232 connection.
Please note that the modem operation is also compatible with the MODBUS communication.
Thus the unit can iniate and receive calls to/from a MODBUS master station. Please review chapter_8
for more details on MODBUS communication.
