Siemens 6ES7223-1BH32-0XB0 VERSION 02 SIMATIC S7-1200 SM 1223 digital I/O module

Frequently asked questions
Q:What is the Siemens 6ES7223-1BH32-0XB0 Version 02?
A:The Siemens 6ES7223-1BH32-0XB0 Version 02 is a SIMATIC S7-1200 SM 1223 digital I/O expansion module featuring 8 digital inputs (24 V DC) and 8 transistor digital outputs (24 V DC, 0.5 A). It is designed to expand the digital I/O capacity of S7-1200 PLC systems.

Q:How many inputs and outputs does the module provide?
A:The module offers 8 digital inputs (24 V DC, sink/source) and 8 digital transistor outputs (24 V DC, 0.5 A per channel), providing a total of 16 digital I/O channels.

Q:What supply voltage is required for the 6ES7223-1BH32-0XB0?
A:The module operates from a 24 V DC power supply with a permissible voltage range of 20.4 to 28.8 V DC.

Description

The Siemens 6ES7223-1BH32-0XB0 Version 02 is a SIMATIC S7-1200 SM 1223 digital I/O module designed to expand the input and output capacity of S7-1200 PLC systems. The module provides 8 digital inputs (24 V DC, sink/source) and 8 transistor digital outputs (24 V DC, 0.5 A), offering a compact solution for industrial automation and machine control applications. It is designed for seamless integration with the SIMATIC S7-1200 platform and supports reliable signal acquisition and high-speed switching performance. Operating from a 24 V DC supply with an allowable voltage range of 20.4 to 28.8 V DC, the module features parameterizable input delays ranging from 0.2 ms to 12.8 ms to accommodate different application requirements. The transistor outputs are rated at 0.5 A per channel, while the module draws a maximum of 145 mA from the 5 V backplane bus. Its compact design enables easy installation alongside other S7-1200 expansion modules, providing flexible and efficient digital I/O expansion for industrial control systems.

Parameter

Model: 6ES7223-1BH32-0XB0 VERSION 02 SIMATIC S7-1200 SM 1223 digital I/O module 
Allowable Voltage Range: 20.4 V DC to 28.8 V DC
Input Delay Range0.2 ms to 12.8 ms (parameterizable)
Current Rating per Channel: 0.5 A
Total Current of Outputs (per group): 4.0 A (Up to 40°C) / 2.0 A (Up to 60°C)
Operating Temperature Range: −20°C to +60°C (Horizontal installation)−20°C to +50°C (Vertical installation)
Enclosure Protection Rating: IP20

Application areas

The Siemens 6ES7223-1BH32-0XB0 Version 02 primary application areas, include:

• Machine Tooling & Metalwork: Integrated into auxiliary control loops for small CNC stations, punching machines, and bending presses to monitor safety door limit switches and drive status indicator lights.
• Water & Environmental Control: Deployed in modular wastewater treatment skids, purification systems, and chemical dosing units to operate low-power dosing pumps and motorized valves.
• Packaging & Printing Machinery: Controls pneumatic cylinder solenoid valves on sealing, labeling, and cartoning machines while simultaneously gathering position feedback from proximity and photoelectric sensors.

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