Communication in building automation and control
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Communication in building automation and control - 1

building automation

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BACnet™ www.big-eu.org 'VfJACíiet I !■ Ir-rr-iit Graup Ëiiropr ti.V The communication protocol BACnet was specially developed for the requirements of buildings. It is suited for both the automation and the management level. The emphasis is placed on building automation and control with a view to HVAC plants, fire control panels, intrusion detection, and access control systems. BACnet is continually expanded for use with other types of building systems, such as escalators and lifts. Nearly 500 vendors use BACnet in their products. The BACnet protocol is standardized throughout the world as...

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KNX® www.knx.org With KNX technology, highly complex and comprehensive building systems as well as small solutions can be implemented to satisfy indi- vidual requirements in room and building automation in a flexible way. KNX products for the control of lighting systems, shading, and room climate plus energy management and security functions excel in ease of installation and commissioning. A vendor-independent tool is available (ETS) for commissioning. KNX is an open worldwide standard conforming to EN 50090 and ISO/IEC 14543 and supported by more than 210 vendors. KNX can use twisted pair...

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PL Link (Siemens-specific protocol) PL Link (PeripheraL Link) is a bus system facilitating optimized communi- cation between peripheral devices and the modular PXC3 room automa- tion stations used in the fields of HVAC, lighting, and shading. Typical peripheral devices are pushbuttons, presence detectors, brightness sensors, other types of sensors, damper actuators, valve actuators, room operating units, etc. Communication capability offers extended comfort and energy saving functions, with no need for extra engineering. - Plug-and-play bus system featuring automatic device identification -...

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LONWORKS www.lonmark.org The LoNWoRKS-based communication protocol is one of the most widely deployed technologies worldwide. Using the protocol, complete net- works made up of interoperable products can be created. This is proven by the fact that more than 700 l_ONMARK®-certified products from more than 400 companies in the fields of building automation and control, traffic, and energy supply are used. Owing to its worldwide use and being a global standard, LONWORKS is also of great importance to Siemens, focusing on HVAC functions in room automation and at the field level. The protocol...

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DALI www.dali-ag.org DALI (Digital Addressable Lighting Interface) is a standardized interface for lighting control. Electronic ballasts for fluorescent lamps, trans- formers, and sensors of lighting systems communicate with the build- ing automation and control system via DALI. - Extensive installation capacity and system flexibility thanks to the support of up to 64 ballasts, 16 groups, and 1 6 scenes - Increased reliability owing to bidirectional communication with feedback of operating state (dim level, lamp failure, etc.) - Polarity-free 2-wire link in line, star or mixed topology with...

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EnOcean® www.enocean-alliance.org Worldwide leading companies operating in the field of building infra- structure have joined to form the EnOcean Alliance, aimed at imple- menting innovative RF solutions for sustainable building projects. Core technology is the self-powered RF technology developed by EnOcean for maintenance-free sensors, which can be installed wherever desired. The EnOcean Alliance stands for the incremental development of the interoperable standard and for a secure future of the innovative RF sensor technology. - EnOcean combines wireless communication with methods...

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Other communication standards Modbus www.modbus.org Modbus is an open and widely used de facto standard applied in a large number of application areas, such as the industrial sector, buildings, traffic, and energy. The Modbus protocol is used to establish master- slave/client-server communication between intelligent devices. Using Modbus, a master (e.g. automation station) and several slaves (e.g. chillers) can be interconnected. Data transmission takes place through one of the three operating modes: Modbus ASCII, RTU, or TCP. M-bus (meter bus) www.m-bus.com M-bus is a European standard...

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Standardized communication protocols for more economical operation Field level Automation level Management level Open communication in building technology is important and facilitates the straightforward and secure integration of third-party systems at all levels. In the field of building automation and control, Siemens supports all communication protocols listed above, with no restriction to standards. These are communication standards that were developed for the successful creation and maintenance of projects. In addition to official market standards, proprietary communication protocols...

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Building automation and control systems from Siemens and solutions based on them make use of the standards listed above. The standardized and independent communication protocols are subject to incremental development and ensure a consistent exchange of information between devices and systems. While BACnet, KNX, and LONWORKS communication is defined in worldwide standards (e.g. EN/ISO), EnOcean, DALI, etc., are accepted by the market as de facto standards because they are so widely used. M-Bus Modbus DALI EnOcean PL Link* *Siemens communication protoco - Straightforward and secure...

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Terms used in connection with KNX KNX Association Alliance of more than 210 companies from 30 countries that agreed on uniform telegram traffic between sensors and actuators in a bus system Out of that, the European Installation Bus (EIB) developed. KNX is the successor organization Physical address The physical address assigns a device an unam- (KNX) biguous address, depending on the topology.

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Infrastructure & Cities Sector Building Technologies Division International Headquarters Siemens Building Technologies Infrastructure & Cities Sector Brunei House Sir William Siemens Square, Frimley United Kingdom Infrastructure & Cities Sector Building Technologies Division 100 How Ming Street, Kwun Tong Kowloon, Hong Kong The information in this document contains general descriptions of technical options available, which do not always have to be present in individual cases. The required features should therefore be specified in each individual case at the time of closing the contract. ©...

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