Siemens 6ES7223-1BL32-0XB0 Digital Input Module

Siemens 6ES7223-1BL32-0XB0 is a SIMATIC S7-1200 SM 1223 digital I/O module that expands the CPU’s I/O capacity with 16 digital inputs and 16 digital outputs, all operating at 24 V DC. The DI side accepts 24 V DC input signals, while the DO side provides 16 transistor outputs rated up to 0.5 A per channel for direct control of loads such as sensors, relays, or solenoids. This module mounts on the SIMATIC S7-1200 backplane and draws power from the backplane, with typical power loss around 4.5 W and a backplane current draw of up to about 185 mA from the 5 V bus to support the input circuitry. The SM 1223 family supports configurable input delay for interrupt-driven operation, with selectable values from 0.2 ms up to 12.8 ms in groups of four, enabling tailored response timing for real-time automation tasks. Designed for compact, reliable digital I/O in small to mid-size PLC applications, it is compatible with S7-1200 controllers that accept 6ES7223-1BL32-0XB0 modules and provides clear, 24 V logic-level interfacing for automated sensing and control.