Assortment / System Description

Synco and KNX

KNX www.knx.org

is based on the European Installation Bus (EIB). EIB, BatiBUS

and EHS, the producers of bus technology, jointly developed the KNX standard for

HVAC plants, lighting and security technology, the objectives being the following:

• Interworking of products of different manufacturers in the same network

• Certification of products used in KNX communication networks

• Backward compatibility with EIB (communication of KNX devices in S-mode)

In its simplest form, the KNX bus (see Data Sheet N3127) consists of a twisted pair

of wires, CE+ (red) and CE– (black), and a jacket.

3127Z05

CE−

In plants operating with Synco devices, bus cables without shielding are permitted.

If interference on the KNX bus is to be expected, the bus cable must be shielded.

The following types of Synco devices have a KNX bus connection facility, enabling

them to be integrated into a KNX network:

• Universal controllers RMU710B, RMU720B, and RMU730B

• Heating controller RMH760B

• Boiler sequence controller RMK770

• Central control unit RMB795B

• Switching and monitoring device RMS705B

• Room unit QAW740 and bus operator unit RMZ792 of the B-series

• Room controllers RXB21.1, RXB22.1, RXL21.1, RXL22.1,

RXB24.1, RXL24.1, RXB39.1, and RXL39.1

• Room thermostats RDF301, RDF301.50, RDU341, RDG100KN, RDG400KN

• Central communication units OZW771.04, OZW771.10, and OZW771.64

• Web servers OZW772.01, OZW772.04, OZW772.16, and OZW772.250

• Service interface OCI700

• Central apartment units QAX9.. (Synco living)

The Synco devices bear the following markings:

Devices carrying this logo are certified by KNX

TP1

Twisted Pair 1, 1 twisted pair of wires (transmission medium)

Easy (mode), Logical Tag Extended (configuration mode)

The Synco devices communicate with each other via zone addresses in LTE

(Logical Tag Extended) mode.

Synco devices and KNX devices supplied by thirds communicate with each other

via group addresses in S-mode (S = System Mode). For S-mode addressing,

commissioning tool ETS Professional is required.

The Synco devices can simultaneously communicate in LTE mode and S-mode.

KNX bus

Shielding of bus cable

Synco and KNX

Product markings

LTE mode, S-mode