FAQ - KNX Gateway

What is profinet protocol and where is it used?

PROFINET is an innovative, open automation Ethernet industrial standard (IEC61158/61784). The KNX PROFINET Gateway allows interfacing a KNX system (e.g. switches, actuators, etc.) to a PROFINET network (e.g. a PLC) thus enabling a data exchange between these networks.

M-Bus, in its wired version, is a 2-wire, cost-effective bus system used for centralized reading of heat, water, gas and electricity consumption meters. M-Bus system has been developed to meet specific communication requirements for those applications where a it is important to calculate billing costs for the final user. The KNX M-Bus Master Gateway allows interfacing a KNX system (e.g. switches, actuators, etc.) to a multi-manufacturer’s M-Bus slave network.

DMX (DigitalMultipleX) is a digital communication standard mainly used for lighting control in entertainment industry. It is usually implemented in a mono-directional way and it is based on RS485 physical protocol. The KNX DMX Gateway allows the connection of a KNX network (e.g. sensors, dimmers, etc.) to a DMX network (e.g. a Light System) thus enabling a data exchange between these networks.

Modbusis a Master/Slave protocol that manages a number of services coded in the “function code” field contained inside each telegram. The KNX Modbus RS485 master Gateway allows the connection of a serial master Modbus network (e.g. a SCADA system) to a KNX network (e.g. light switches, actuators, etc.) thus enabling a data exchange between these networks. The KNX Modbus TCP/IP master Gateway shares the same function as the RS485, the only difference being the type of connection, which is no longer serial, but a TCP/IP connection through an Ethernet cable.

BACnet is an open and neutral communication protocol used in building automation and control networks.

A communication protocol is a group of rules regulating a data exchange through a computer network. These rules can be coded in a written form (e.g. on a compact disk) and define everything that is necessary to comply with the protocol. The KNX BACnet IP server Gateway  uses a standard UDP/IP stack through an Ethernet network to send and receive telegrams over a KNX network. The KNX BACnet MS/TP server Gateway  shares the same function as BACnet IP, the only difference being that data exchange is carried out between a RS485 serial differential network and a KNX network.

DALI is an international standard protocol compliant with CEI-EN-62386 rule, which guarantees the interchangeability of electronic dimmable power supplies made by different manufacturers. DALI system allows controlling up to 64 addressable lighting devices. The DALI Gateway allows the connection of a DALI network (such as a lighting system, etc.) with a KNX network (such as lighting switches, actuators, etc.), thus enabling a data exchange between these networks.

Other FAQs

KNX Actuators and Outputs

Actuators are devices that produce a physical action on the controlled system by executing a command received from a control device.


The CODESYS PLC executes a program and elaborates the digital and analog signals coming from sensors and meant for the actuators installed in a KNX plant.

KNX Power Supply

Ekinex AB1 and AG1 KNX power supplies provide the network voltage (SELV) to all KNX components.

KNX System Device

Ekinex proposes system equipment to be able are used to build an efficient communication infrastructure and allow the system integration in different environments.

KNX Dimmer

The Ekinex® actuator / dimmer is an S-mode modular KNX device for panel mounting, able to command and regulate the brightness of lighting devices.

KNX Input

In a home automation plant, commands are often realized with pushbutton interfaces, commonly referred to as “spiders”, which are connected to traditionals rockers.

KNX Metering

The Ekinex® metering products are divided into energy meters, communication modules and network analyzers.

KNX Thermal Regulation

The Ekinex® products for temperature control are grouped in fancoil, electrothermal actuator and mixing group controllers.

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