Siemens 6ES7 226-6BA32-0XB0 Digital Input Module

Siemens 6ES7226-6BA32-0XB0 SM1226 F-DI is a fail-safe digital input module for SIMATIC S7-1200 controllers, providing 16 channels of 24 V DC input with PROFIsafe for safety-related automation. It supports two configurations: 16 inputs (SIL 2 / PL d) or 8 inputs (SIL 3 / PL e) or a combination, enabling flexible input topology on a compact module that is 70 mm wide. The device is designed for fail-safe operation within S7-1200 safety architectures and is powered by 24 V DC with NEC Class 2-compliant supply, with typical power dissipation around 7 W. In safety contexts, SM1226 inputs report to the safety CPU via PROFIsafe, helping meet ISO 13849-1 PL d / IEC 61508 SIL 3 requirements where applicable. Applications include monitoring safety-rated sensors and providing safe input signals for safety PLC logic in compact automation installations.