
CP3 version 3003
19
Dupline
®
Bus and Smart Dupline
®
Bus
The smart-building system is based on a new protocol of the Dupline® bus. The protocol is called
Smart
Dupline®.
Smart Dupline® implements a master-slave protocol running on standard Dupline® networks.
The concept of Smart Dupline® is based on the SIN – a Specific Identification Number which is unique for
each and every Dupline® module. The SIN is incorporated into the module during the production process
and cannot be modified.
The SIN code is printed on the product label like this:
SIN: 255.255.255
The SIN contains information about the type of Dupline® module (light switches, pir, I/O modules), the
firmware release and much more.
Smart-Dupline® enriches the previous Dupline® bus protocol with these features:
1) The master generator can program the network address ADD (1...250) in each device by means of the
Specific Identification Number.
2) The master generator can program the Dupline® standard channel addresses and all the other module
parameters by means of the Specific Identification Number.
3) The master generator can
access
all input and output module information by means of the Specific
Identification Number.
4) It is possible to manage double word information in a single message frame
5) A CRC control is implemented in request and reply frames. Should an error occur, the bus generator
resends the request until it receives a correct frame.
Analogue data is transmitted via the Smart Dupline® protocol without using digital I/O channels.
Dupline
®
Bus Including a 3’rd Wire
The parking guidance system uses an expanded version of Dupline® in which a 24-VDC power supply is
included as a 3rd wire. The reason being that a power supply is needed for the Carpark sensors on the bus.
The power supply must be synchronised with the Dupline® bus, and this is taken care of by the specific
carpark master channel generator (CMCG) for the parking system.
One carpark master generator, which drives one lane of the basic 3-wire Dupline® fieldbus, can manage up
to 120 inputs and 112 outputs. Because of the load and the voltage drop we recommend you not to install
more than 50 Carpark sensors on a line and no more than 90 Carpark sensors in total on a generator
(CMCG).
Dupline
®
Extra Features
The wide range of Dupline® products for building and industrial applications are fully compatible with the
parking guidance system, which makes it possible to extend the functionality to include such things as
control of lighting and ventilation based on the presence of persons, CO2 levels and time of the day. Yet
another option is to record the energy consumption in power distribution panels throughout the building in