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© Carlo Gavazzi A/S
toring of alarms, and the possibility to book spaces in the parking system� In order to provide useful
statistical information, all parking events are stored in the database� On the basis of these data histor-
ical reports e�g� for occupancy rates, place rotation frequencies, place popularity rates and alarms can
be optained�
The Dupline
®
Parking Guidance software is a true client/server software using the latest technologies
from Microsoft for client/server communication� This enables users to monitor and control the
Dupline
®
Parking Guidance System from anywhere in the world provided that the computer running
the Parking Guidance System Server software is accessible on the Internet�
The latest SQL Server 2008 from Microsoft is used by the Parking Guidance System Server software
to store all data acquired from the Dupline
®
Parking Guidance System for presentation in the Parking
Guidance System Client software�
Dupline
®
Master Modules (DMMs) can be connected to up to 120 sensors� Each sensor is assigned
a Dupline
®
channel (which corresponds to a Dupline
®
address in the software)� DMMs can in turn be
connected to Moxa NPorts using RS485 cables�
Each port on a moxa can support up to 16 parallel-connected DMMs� So a device like the Moxa NPort
IA-5250 could, if need be, support up to 32 DMMs, hence 3840 place sensors� The moxa devices
convert RS485 data into ethernet data� By connecting the moxas to the same network as the Parking
Guidance System Server host machine, the Parking Guidance System Server software will be able to
monitor the state of the place sensors (assuming the system has been properly configured)� Moxas
can be connected to the network using a switch� Alternatively, you can choose to connect only a
single moxa to the network and then cascade connect the rest, as shown in the above diagram� To
Fig. 27: Parking Guidance System overview