Siemens 6ES7223-1BH20-0XA0 EM 223

Combined Digital Input and Output Module for S7-200 Expansion

The Siemens 6ES7223-1BH20-0XA0 serves as a digital I/O expansion module (EM 223) for the SIMATIC S7-200 PLC system. This module provides a balanced combination of digital inputs and outputs for flexible system expansion. It connects directly to the S7-200 expansion bus for seamless integration. The module offers a cost-effective solution for applications requiring additional I/O points.

Key Technical Specifications

Parameter	Specification
Product Model	Siemens 6ES7223-1BH20-0XA0
Brand	Siemens
Category	PLC Digital I/O Module
Product Family	SIMATIC S7-200
Number of Digital Inputs	8 points (24 VDC)
Number of Digital Outputs	8 points (24 VDC, transistor)
Input Type	Sink/Source (IEC Type 1)
Output Type	Solid-state (transistor)
Output Current	0.75 A per point (maximum)
Power Supply	24 VDC (from backplane)
Current Consumption	40 mA (from backplane)
Dimensions	45 mm x 80 mm x 62 mm (approx.)
Weight	Approx. 150 g
Operating Temperature	0°C to 55°C
Storage Temperature	-40°C to 70°C
Protection Class	IP20

Input and Output Performance

The Siemens 6ES7223-1BH20-0XA0 features 8 digital inputs and 8 digital outputs. The inputs accept 24 VDC signals from sensors and switches. The transistor outputs can switch 0.75 A per point for actuators and indicators. This balanced configuration is suitable for a wide variety of control applications.

System Integration and Configuration

This expansion module connects directly to the S7-200 CPU via the expansion bus. The CPU automatically recognizes the module and assigns I/O addresses. Users can configure the module through the programming software.

Physical Design and Installation

The module features a compact housing that mounts on a DIN rail. Removable terminal blocks simplify field wiring. LED indicators show the status of each input and output channel.

Application Suitability

This module suits small to medium-sized control systems requiring additional digital I/O. Typical applications include machine control, conveyor systems, and packaging equipment. It provides an economical way to expand the S7-200 system.