Communication with S7 CPU via KNX Gateway
Entry ID: 109739689, V1.0, 06/2017
Siemens AG 2017 All rights reserved
The following table shows the relevant interfaces of the gateway for this application
example:
Table 2-1: Gateway interfaces
SIMATIC CPU
(S7-1200 CPU)
KNX devices (incl. KNX
power supply)
Advantages
The solution presented here offers the following advantages:
Easy adaptation to other controller families. Representing all other SIMATIC
controllers with a PROFINET IO interface, this solution uses the S7-1200 CPU.
Easy adaptation when expanding plants. The gateway is configured directly in
the gateway’s integrated web server.
Integration of the gateway as a PROFINET IO device via a GSD file.
Gateway as distributed I/O with up to 340 bytes of input and 340 bytes of
output.
Up to 2500 data points possible for communication between PROFINET and
KNX.
Scope
This document does not replace the gateway manual. If there are any
differences in the documentation, the documentation provided by MBS GmbH
always takes precedence.
This application example only describes how to get started with KNX
communication with SIMATIC CPUs using a KNX gateway. For more
information about the KNX gateway, please refer to the gateway manual or
directly contact MBS GmbH.
Configuring the KNX devices using the ETS
software and communication
between the gateway and the KNX devices are not part of this application
example.
Sales, distribution, training, service and support for the “Triple-
X PROFINET + KNX” universal gateway are provided exclusively by
MBS GmbH.
Required knowledge
Basic knowledge of STEP 7 (TIA Portal) programming and project engineering
Basic knowledge of PROFINET communication and configuration
Basic knowledge of the ETS software, KNX communication and KNX group
addresses
Engineering Tool Software (ETS) for programming nodes and assigning group addresses in a
KNX network.
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