Siemens 6ES7226-6BA32-0XB0 Digital Input Module

Siemens 6ES7226-6BA32-0XB0 is the SIMATIC S7-1200 SM 1226 fail‑safe digital input module (F‑DI) that provides 16 isolated 24 V DC inputs for safety‑related sensing in a distributed I/O setup. Designed for the SM 1226 family, it fits in the 70 mm wide footprint and accepts 24 V DC field signals from devices such as emergency stops, safety interlocks, and guarded sensors, feeding safe‑state information back to a safety CPU via PROFIsafe. This module supports safety‑rated communication and performance up to PL E (ISO 13849‑1) / SIL3 (IEC 61508), enabling robust monitoring of critical inputs in automated machinery. As a digital input block, each of the 16 channels is dedicated to sensing 24 V DC signals, enabling straightforward expansion of S7‑1200 safety applications without sacrificing diagnostics or wiring efficiency.