The Simatic S7-1200 line of compact controllers now includes both standard and failsafe functionality. Achievable Safety Integrity Level (SIL) 3 complies with IEC 61508 2nd Edition / PL e to ISO 13849. The controllers’ TÜV-certified failsafe-library handles all conventional safety functions. Both failsafe controllers are dc/dc/dc- or dc/dc/Rly-variant. They include 24 integrated standard inputs/outputs and an integrated Ethernet interface. Expandable to eight standard or failsafe signal modules, the controllers feature one signal board, as many as three communication modules, two integrated 0-10 V standard analog inputs and two 0- 20 mA analog outputs.