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KNX: The Standard in Home and Building System Technology

KNX is a uniform, manufacturer-independent communication protocol for intelligently networking state-of-the-art home and building system technologies. KNX is used to plan and control energy-efficient solutions for more functionality and convenience while simultaneously reducing energy costs.

KNX System Features:

A distributed bus system that allows devices to exchange information directly
Bus voltage: 24 VDC (+6/-4 V)
CSMA/CA protocol protects against data loss resulting from telegram collisions.
Up to 12,000 bus nodes can be connected
Data transmission rate of 9.6 kBit/s, termination resistors not required

KNX® Simply Explained

For more than 20 years, KNX® (KNX® is based on the predecessors EIB, EHS and BatiBUS) has proven itself as a global standard for home and building automation in accordance with EN 50090 and ISO/IEC 14543. A great advantage of KNX® is its remote configuration: Instead of a central device, the functions are accommodated in the individual bus subscribers. The sensors, such as switches and presence detectors, send control commands directly to the lights, blinds, heating and ventilation systems. Assignments and functions are easily configured in the “Engineering Tool Software” (ETS) and can be modified or adjusted at any time.

KNX® supports different transmission media, e.g., twisted-pair cable (KNX TP), ETHERNET (KNX IP), radio (KNX RF) or Powerline (KNX PL). With KNX® devices from different manufacturers are compatible and can be flexibly combined in one comprehensive solution. As each device has its own microprocessor, no control station is required.

Variable and Individualized – Using KNX® in Building Automation

As an open standard, KNX® technology provides a uniform, convenient user interface for home and building automation – from residential to commercial applications. Thanks to a broad range of applications, numerous devices and systems can be linked together with KNX®. For example, this allows a networked system consisting of lighting, shading and HVAC to be easily controlled in commercial and utility buildings according to user requirements.

The individual components of a KNX® KNX system include sensors and actuators. Sensors such as thermostats, switches or wind gauges, generate commands in the form of telegrams. These telegrams are turned into actions by the actuators (e.g., switching relays for blinds or lighting). A two-wire bus line provides the connection, and thus telegram traffic, between sensors and actuators. As a result, individual system components do not have to be networked, which significantly reduces the amount of wiring.

Functionality and Convenience: WAGO and KNX®

With the KNX IP Controller (Item No. 750-889) and the KNX TP1 Module (Item No. 753-646), WAGO provides an innovative and upgradable solution to building automation. Connectivity to conventional sensors and actuators, as well as complex connections to DALI, EnOcean® and others, are cost-effectively unified on the WAGO KNX IP Controller. The WAGO KNX TP1 Module connects to TP1 networks. ETHERNET as a medium, along with KNX IP as a transmission protocol, enable high-speed communication between devices while providing seamless integration into existing infrastructures.

Together, the KNX IP Controller and the KNX/TP1 Module make up the KNXnet IP Router, which connects traditional TP1 networks to ETHERNET. This considerably increases the transmission speed within a KNX® network. It also enables a high level of data traffic on the backbone, preventing a bottleneck to the superimposed visualization system. The KNX IP Router also acts as a network interface for the ETS software for configuration and parameter setting. The respective product databases/plug-ins for the KNX IP Controller, KNX TP1 Module and KNX IP Router do more than support device-specific configuration. For convenient use, they are designed so that you can apply already known and proven methods and procedures of the ETS.

Advantages of WAGO and KNX®:

Freely programmable applications offer high degree of project flexibility
Ability to connect digital and analog sensors, actuators and subsystems (e.g., DALI, EnOcean®, etc.)
High speed, fast response times and larger amounts of data on devices directly connected to the ETHERNET
Complete integration of twisted-pair devices
KNX IP Controller can be combined with the KNX TP1 Module for versatile applications