Fail-safe distributed I/O systems with SIMATIC ET 200
The modular design allows you to easily scale SIMATIC ET 200 systems in small steps and expand them with fail-safe I/O modules. The products can be integrated in the automation system using PROFINET and/or PROFIBUS via PROFIsafe. All fail-safe I/O modules are certified for use in applications in accordance with IEC 62061 up to SIL 3 and EN ISO 13849-1 up to PL e.
![SIMATIC fail-safe I/O systems: Machine safety in a distributed configuration simatic-fail-safe-io-systems](https://assets.new.siemens.com/siemens/assets/api/uuid:195f80d8-0bb0-4f31-9ef0-eeb6de831996/width:100/quality:low/simatic-fail-safe-io-systems.png)
The modular design allows you to easily scale SIMATIC ET 200 systems in small steps and expand them with fail-safe I/O modules. The products can be integrated in the automation system using PROFINET and/or PROFIBUS via PROFIsafe. All fail-safe I/O modules are certified for use in applications in accordance with IEC 62061 up to SIL 3 and EN ISO 13849-1 up to PL e.