Equipping brown-field machinery with condition monitoring and data analytics applications allows to get the IoT-benefit out of existing machine installations. The netFIELD App PROFINET Tap allows extracting machinery process data simply by monitoring the existing network traffic. There is no need to change PLC or machine configuration. It works with any PROFINET network, independent of PLC or device vendor.


IoT-enable your machine within minutes in five simple steps:

  1. Lead out existing network traffic via a network TAP (1) device or the mirror port of a switch (2)
  2. Automatically read in the PROFINET configuration from a machine startup
  3. Add data semantics automatically simply by importing the TIA Portal Engineering project or GSDML device description files
  4. Select information of interest from the whole machine process data image interactively in the configuration app
  5. Subscribe to MQTT messages in your monitoring or analytics application

As their is no need of touching the network or PLC configuration the required integration effort is minimal. The rich configuration app allows importing symbol information from device description files. In a Siemens environment integration is even easier, TIA Portal semantics can be used directly.

TAP = Terminal Access Port, a hardware device which allows mirroring network traffic without interference to existing infrastructure
Many managed Ethernet switches support mirroring network traffic streams via switch configuration


Containerized software

  • The netFIELD App PROFINET Tap is delivered as a containerized software which allows easy deployment and software management.
  • The software container delivers a built-in rich configuration app which can be used easily via a web-browser without the need of installing any additional software tools.

Deep packet inspection with integrated fieldbus intelligence

  • The netFIELD App PROFINET Tap analyses the existing machine network traffic using deep packet inspection technologies.
  • It "understands" the fieldbus protocol by itself and thus does not require you as an end-user to deep-dive into fieldbus technology.
  • Due to the listening-only functionality, netFIELD App PROFINET Tap is absolutely invisible to your existing machine components and thus cannot disturb the existing process.

Form data to information

  • The extracted raw fieldbus data is automatically enriched by semantics during the capture process.
  • The required semantic information can be read in by using AutomationML as interchange format with TIA Portal in a Siemens environment.
  • Alternatively, GSDML device description files can be read in, allowing mapping semantic information in any non-vendorspecific environment.
  • Of course, it is always possible to "fi ne tune" semantics manually via the configuration app.
Listen to PROFINETtrafficPublish information via MQTTSemantic import fromTIAPortalSemantic import from device description filesPROFINETControllerPROFINETDevicePROFINETDevicePROFINETDeviceInterpret PROFINETand extract rawprocess data Transform data toinformation by adding semanticTAPSelect only information ofinterest fromthewhole datasetMQTT BrokerThe netFIELDApp PROFINETTapData semantic
There is no need of touching your working machine, nor changing PLC or machine configuration Automatic PROFINET configuration detection and semantic mapping from TIA Portal or GSDML Secure by design due to the listening-only functionality
ArticleOrder NumberCategoryVersion
netFIELD App
1917.007Data Acquisition1.0.0