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Entry type: Application example Entry ID: 22304119, Entry date: 09/12/2017

Safety: Passivation and Reintegration of F-I/O

  • Entry
  • Associated product(s)
In case of passivation, the F-I/Os will switched into in the fail-safe state. After fault correction, the F-I/Os can be reintegrated. For the reintegration exists different possibilities and depends on wheter the F-I/Os support the RIOforFA-Safety PROFIsafe profile.

In the event of an error on an F-I/O (e.g. a channel fault), the F-I/O (or the affected channel) switches to safe mode. In this state of “passivation”, substitute values are automatically output instead of process values.

After clearing the error that caused the passivation, the switchover from substitute values to process values can occur. The switchover can be done automatically or after a user acknowledgment in the safety program. The switchover is referred to as “reintegration”.

The present safety application example describes the passivation and reintegration of F-I/O according to the following content:

  • Manual and automatic reintegration
  • RIOforFA PROFIsafe profile
  • Value state and QBAD
  • Differences in evaluation with F-CPUs S7-1200/1500 and S7-300/400

If you would like to reproduce the functions described here, the according TIA Portal project is available for you for the S7-1200 and the S7-1500.

Documentation and example project
  Documentation V2.0 for TIA Portal V14 (1,6 MB)
 Registrierung notwendig  Example project V2.0 for TIA Portal with S7-1200 F-CPU (2,1 MB)
 Registrierung notwendig  Example project V2.0 for TIA Portal with S7-1500 F-CPU (2,2 MB)

 Registrierung notwendig  Documentation V1.0 for STEP 7 V5.3 and S7 Distributed Safety (1,3 MB)
 Registrierung notwendig  Example project V1.0 for STEP 7 V5.3 and S7 Distributed Safety V5.4 (536,9 KB)

Last change
Update to STEP 7 V14

Security notes
Siemens provides products and solutions with Industrial Security functions that support the secure operation of plants, systems, machines and networks. 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. Products and solutions from Siemens are only one part of such a concept. It is the customer’s responsibility to prevent unauthorized access to the customer’s plants, systems, machines and networks. Systems, machines and components should only be connected with the company’s network or the Internet, when and insofar as this is required and the appropriate protective measures (for example, use of firewalls and network segmentation) have been taken. In addition, Siemens’ recommendations regarding appropriate protective action should be followed. For more information about Industrial Security, visit http://www.siemens.com/industrialsecurity. Siemens’ products and solutions undergo continuous development to make them even more secure. Siemens strongly recommends to carry out updates as soon as the respective updates are available and always only to use the current product versions. Use of product versions that are no longer supported, and failure to apply latest updates may increase customer’s exposure to cyber threats. To stay informed about product updates as they occur, subscribe to the Siemens Industrial Security RSS feed at http://www.siemens.com/industrialsecurity.

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
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