Siemens 6ES7221-1BH32-0XB0 – S7-1200 SM 1221, 16DI 24V DC Digital Input Module

SIEMENS
May 12, 2026
Video Description:
In this video, we explore the Siemens 6ES7221-1BH32-0XB0 digital input module for S7-1200 PLC systems. You'll see how this 16-channel module integrates into industrial automation setups, learn about its wiring and configuration in TIA Portal, and understand its practical applications in factory automation, packaging machinery, and conveyor systems.