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Entry type: Application example, Entry ID: 109476182, Entry date: 06/13/2016
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Communication with S7-CPU via BACnet Gateway

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This application example Shows, how to configure a communivation between SIMATIC PLC and a BACnet Network with a gateway.

Task
Gateways enable the communication between two networks that use different communication protocols.BACnet (Building Automation and Control Networks) is a network protocol used in technical building automation.
The task is to create a communication connection between a SIMATIC PLC via PROFINET interface using a BACnet gateway. The objective of this document is to discuss the gateway suitable for this task and how the configuration between SIMATIC PLC and the gateway is realized.


Figure 1

Solution
An S7-1200 CPU is used in place of all SIMATIC PLCs. The layout diagram below shows the most important components of the solution for the communication between an S7-1200 CPU and the “UGW//micro PROFINET RS232/485” gateway by MBS GmbH.


Figure 2

Advantages
The application presented here offers the following advantages:

  • The application example can simply be adjusted to other controller families.
  • The application example can be simply adjusted for plant expansions.
  • Only standard tools (simple text editor) are required for configuring and commissioning the gateway. An updated software version of the gateway offers the option to edit the configuration files directly via the integrated web server (Downloads V1.2).


Downloads V1.1

Last changes
V1.2 Documentation has been adapted to the current firmware (new web server interface) of the UGW gateway.


Security information
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about industrial security, please visit
http://www.siemens.com/industrialsecurity.