Siemens Simatic Electronic module for ET 200SP, F-DI 8x 24VDC HFProduct Overview SIMATIC DP electronic module for ET 200SP featuring 8 fail safe digital inputs (F DI) with 24V DC operation in High Feature (HF) configuration and ultra compact 15mm width design. This safety certified module meets the highest safety standards up to Performance Level e (PLe) according to ISO 13849 1 and Safety Integrity Level 3 (SIL3) according to IEC 61508, providing reliable fail safe input monitoring for critical safety