How to install a Sx2WEB system
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1.2.2 The Dupline® bus
The Dupline® bus is a signal transmission system that reduces the need for wires, as compared to an
ordinary installation. Using only 2 wires, the information can be transmitted from up to 2 km away. Many
input and output modules are supplied from the same 2 wires. Both digital (on-off) and analogue (e.g.
temperature, light level, wind speed and other) data is present on the bus at the same time and it is
collected by the SH2MCG24 and then processed by the Sx2WEB24.
The SH2MCG24 is the smart Dupline® bus generator that powers the Dupline® bus onto the local bus
and onto the terminals at the top. All the Dupline® slave modules have to be connected to one
SH2MCG24 to be part of the smart-house system.
The SH2MCG24 is powered by 15 to 30Vdc.
The Dupline® modules in the smart-house system can be divided into two groups:
-
Decentralized modules: these are all the modules such as light switches, PIR sensors, lux
sensors, decentralized I/O modules, etc. which are mounted into the wall boxes or on the wall
-
Centralized cabinet modules: these are the ones housed in the 1-DIN or 2-DIN housing for din
rail mounting
All our
decentralised
Dupline® devices are connected to each other with a single 2-wire cable. This
cable carries the communication signal that comes from the bus generator SH2MCG24. These 2 wires
carry a DC low-voltage pulsating signal, and therefore attention must be paid to keep the correct
polarity of the connection.
The Bus is overload and short-circuit protected, but anyway it is a good rule to avoid to invert
the polarity.
The modules cannot withstand voltages other than the Dupline® signal voltage (5.5V to 10V).
Dupline® bus
Dupline® bus
