AC500 Digital Standard I/O Functional Safety Application Note

This application note describes how to use AC500 digital standard I/O modules together with an SM560-S Safety CPU to realize functional safety functions up to PL c (ISO 13849-1), potentially reducing the need for additional safety I/O modules and saving costs. It includes an example with safety function design, failure probability calculations, and compliance analysis, and notes that higher safety levels (PL d, SIL CL 2) are possible with more detailed analysis.