F-Host certification available for Profisafe

PI (Profibus and Profinet) is providing certification for safety-related hosts (F-Hosts) on Profisafe.

This software can be used in identical form on different controllers.

A prerequisite for performing a Profisafe host test is the existence of a Profibus or Profinet certificate for the controller, in which the Profisafe host is integrated.

The Profisafe host test itself, which is approved by TUV, is virtually an automated test performed at accredited test laboratories.

As part of this process, the parameters, watchdog, and GSD files are tested first, followed by negative tests in the interface module, a Profisafe profile test, and the interoperability test in the test equipment.

In addition, the program has built-in protection mechanisms.

A CRC (cyclic redundancy check ) is used to protect Profisafe host programs, enabling TUV to detect changes.

CRC protection encompasses the Profisafe host project, the test case scripts, and the test result.

This enables TUV to detect test case changes and to check whether the test was implemented completely.

PI provides a Profisafe certificate based on a positive test report confirming the conformity of the host.

When products with a Profisafe certificate are used, the residual error probability in data transmission is no longer a concern, because this has already been proven generally for all proper implementations of Profisafe.

In addition, all deterministic error models, such as delay in data transmission or repetition of safety-related frames, have been handled as part of the Profisafe stack certification.

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