SelectTrust^®
Safe DMI technology up to SIL2

Reliable monitoring of safety-critical displays 

Operator terminals based on modern computing technology require reliable error detection mechanisms when used for safety-critical inputs and outputs.

A truly secure choice
With SelectTrust®, you can rely on a cost-effective solution to reliably ensure secure data input via a single display – without compromising on security or efficiency.

The technology remains completely invisible to the operator: they select a graphical control element on the TFT display and activate it via touch.

SelectTrust® identifies the selected control element using IconTrust^®, assigns it a unique signature, and transmits the input as a functionally safe action to a safe computer. This clearly ensures the reliability and correctness of the input.

SelectTrust^® and IconTrust® continuously monitor all security-relevant display and input areas, thereby ensuring standards-compliant, secure operation in safety-critical applications.

SelectTrust^® enables both safety-related and non-safety-related information to be displayed within a single HMI unit. This eliminates the need for separate systems to meet different safety requirements.

SelectTrust® enables the use of powerful standard PC technology even in safety-critical applications. Users benefit from high cost-efficiency, ergonomic design, flexible configuration options and high versatility – without compromising on functional safety.

IconTrust® multifunctional terminals enable significant cost and time savings to be realised throughout the entire product and project lifecycle. Verification of the safety function is limited to compliance with the defined operating conditions.

 
Updated safety verifications are only required if safety-critical display areas are affected by project or product modifications. Changes to non-safety-related display content have no impact on the safety assessment and do not require re-certification.

This allows you to significantly reduce the effort, costs and duration of certification procedures – whilst maintaining a high degree of flexibility in the design and further development of your HMI applications.