Datasheet

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Siemens Switzerland Ltd http://www.siemens.com/buildingtechnologies-productcatalog 2014
Building Technologies Division
System functions
Communication – network
Communication standards specially developed for building systems
Compliant devices can be interconnected at low cost using the BACnet (Building Automation and Control network) open communication
protocol. The worldwide BACnet standard was developed specically for the needs of building services, under the auspices of ASHRAE
(the American Society of Heating, Refrigerating and Air-Conditioning Engineers). BACnet networks provide all subscribers with access to
all the data and functions of the connected devices.
BACnet, KNX and L
onWorks
• For the exchange of information among its own system components, Desigo uses three standard protocols, recognized worldwide:
BACnet, KNX (EIB) and L
onWorks. Desigo uses the BACnet communication protocol to exchange information between the individual
Desigo PX automation stations and the Desigo TRA room automation stations on the one hand, and to the Desigo management
station on the other.
Desigo uses IP, LonTalk or PTP (point-to-point, modem or null modem) as the transport medium.
Furthermore, Desigo supports integration of BACnet/MSTP subsystems. The PXG3 router provides transparent BACnet trafc bet-
ween the MSTP and IP network (BACnet/IPv4 as well as BACnet/IPv6) and, optionally, to LonTalk as an addition.
The integrated KNX connection on Desigo TRAs room automation station PXC3 permits direct integration of both devices with the
KNX PL-Link as well as KNX S-Mode in Desigo TRA. Communication between room automation stations and eld devices with KNX
PL-Link is optimized within the framework of the KNX standard for available plug-and-play functionality including automatic device
recognition. Desigo Tools parameterize devices with the KNX PL-Link; the KNX commissioning software (ETS) is not required. A broad
selection of Siemens eld devices, including room operator units, buttons, motion detectors, or VAV compact controllers support
the KNX PL-Link.
Also, the Desigo RX room automation product range communicates per L
onMark standard or KNX S-Mode (EIB).
Thanks to the support of the BACnet Life Safety objects, simple and secure connection to re detection systems such as Sinteso FS20
or Cerberus PRO to Desigo is possible without problems.
BACnet certication
• All Desigo PX and TRA BACnet servers as well as the Desigo management station were submitted to the BACnet Interest Group
Europe (BIG-EU) for compliance testing based on the BACnet standard DIN EN ISO 16484-5 and successfully certied. A well-known
testing institution conducted the comprehensive testing.
The management, automation, and room automation stations are all implemented as full BACnet nodes. BACnet is integrated direct-
ly without the need for any special data conversion.
The Desigo PX automation stations satisfy the B-BC prole (BACnet Building Controller). The Desigo management station satises
the B-AWS prole (BACnet advanced workstation). The Desigo TRA room automation stations support a BACnet object’s scope (BAC-
net B-ASC prole) adjusted to room automation.
AMEV guideline
Open communication between various systems using a common automation and operating concept are key functions for energy-saving
and reliable plant operation. As a consequence, Desigo meets in full the AMEV guideline „BACnet 2011“ with the following proles:
• Desigo management station: AMEV proles MBE-A and MBE-B
• Desigo PX: AMEV proles AS-A and AS-B
DALI, EnOcean
• DALI, EnOcean, and KNX devices turn the PXC3 room automation stations of Desigo TRA into a complete solution for the room.
The optional DALI bus of the room automation stations allow for simple integration of different lamps and luminaires. DALI (Digital
Addressable Lighting Interface) is a worldwide standard that applies specically to lighting control at cost-efcient two-wire techno-
logy and integrated power supply.
Self-powered EnOcean radio technology offers wireless connection of eld devices based on extremely energy-saving technology.
The operating energy required by the devices is taken directly from the environment. The wireless room units QAX9..4 can be used
via EnOcean/L
onWorks or EnOcean/KNX gateway with Desigo TRA or RX.