"SIMATIC S7-1200, digital input SM 1226, F-DI 16X 24 V DC, PROFIsafeDigital inputs as an addition to the integrated peripherals for the CPUsIntegrated into the overall automation for realising safety-related application requirementsWith built-in safety featuresCommunication to fail-safe CPUs via PROFIsafe mechanismsUp to PL E (ISO 13849-1)/SIL3 (IEC 61508)"