User Manual

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Siemens Communication System Synco living CE1N2708en
Building Technologies 19.01.2009
Technical data KNX RF
Frequency 868.3 MHz (868.0 – 868.6 MHz band)
conforming to EN 300 220, CEPT ERC 70-03
Duty Cycle <1 %
to prevent interference with neighboring systems,
transmitters may be switched on for short periods of
time only (relative on time or duty cycle);
devices operating with the 868 MHz band may use
the radio channel for no more than 1 % of the time,
thus ensuring high levels of availability and reliability
of communication;
typical radio channel usage of the Siemens Synco
living devices is far below 1 %
Protocol layers:
- Physical Layer - common Physical Layer Definition of Konnex
and M-bus to EN 13757-4
- Link Layer Transport Protocol - common Link Layer Definition of Konnex
and M-bus to IEC870-5-2
- Higher potocol layers
- Konnex Layers 2, 3, 4 and 7 (analogous to TP1)
Modulation / data coding FSK (frequency shift keying) /
Manchester coding
Transmit power typically 10 mW, max. 25 mW
Data rate 16.384 kBit/s
Data backup high transmission reliability through CRC
data block protection
Range
(direct reception without repeater)
typically:
- 30 m in the building
- 300 m in open space
Number of RF devices per system max. 64
Commissioning devices are connected by pressing a button (easy
installation)
Device identification devices are integrated in the system during
commissioning by means of an unambiguous 48-Bit
identification number
the 48-Bit identification number is contained in
every radio telegram; this offers a clearly defined
boundary to neighboring radio systems