Beckhoff Sistema Library ((link)) Review

The MTTFd_Channel_A input expects years (per ISO 13849-1 standard). For electronic components with very high MTTFd (e.g., 10,000 years), the library caps the value at the maximum level (2500 years + high value = "high").

If you have a specific use case (e.g., reading a config file once at boot, or monitoring CPU load), I can give you a safe implementation example. beckhoff sistema library

Locate the specific Beckhoff terminal or drive you are using in your physical control panel. The MTTFd_Channel_A input expects years (per ISO 13849-1