Siemens SIMATIC S7-200 CN EM 223 Digital I/O Module – 6ES7223-1HF22-0XA8

The Siemens SIMATIC S7-200 CN EM 223, order number 6ES7223-1HF22-0XA8, is a compact digital input/output expansion module designed for compatible SIMATIC S7-22X PLC CPUs.

The module provides 4 digital inputs and 4 relay digital outputs, allowing additional field devices, switches, sensors, contactors and other control equipment to be integrated into an existing S7-200 automation system.

4 Digital Inputs + 4 Relay Outputs

The EM 223 combines input and output expansion in a single compact module. It provides 4 digital inputs together with 4 relay outputs, making it useful for smaller automation applications where only a limited number of additional I/O points are required.

Relay Output Configuration

The four digital outputs use relay contacts. Siemens specifies an output rated current of 2A and indicates that the relay outputs are not internally short-circuit protected.

Designed for S7-22X CPUs

This EM 223 module is specifically designed for use with compatible Siemens SIMATIC S7-22X CPUs. It is suitable for expanding existing S7-200 CN PLC installations during machine upgrades, repairs or control-system modifications.

Key Specifications

Manufacturer	Siemens
Product Family	SIMATIC S7-200 CN
Module Series	EM 223
Order Number / MPN	6ES7223-1HF22-0XA8
Product Type	Digital Input / Output Expansion Module
Compatible CPU Family	S7-22X
Digital Inputs	4
Input Voltage Type	AC / DC
Typical Input Current at Signal "1"	4 mA
Digital Outputs	4
Output Type	Relay
Rated Output Current	2 A
Specified Voltage Range	5–30 V DC / up to 250 V AC
Output Short-Circuit Protection	No
Typical Power Loss	2 W
Width	46 mm
Height	80 mm
Depth	62 mm
Product Version	S7-200 CN

Compact Expansion Module

With dimensions of approximately 46 × 80 × 62 mm, the EM 223 provides additional digital I/O capability without requiring a large amount of control-panel space.

Typical Applications

• Siemens S7-200 PLC Expansion
• Industrial Machine Control
• Factory Automation
• Production Equipment
• Conveyor Control Systems
• Pump and Motor Control
• Packaging Machinery
• Control Panel Expansion
• Relay-Control Applications
• Industrial Equipment Repair
• Legacy S7-200 System Maintenance
• Replacement of Existing EM 223 Modules

Important CN Version Information

This product is specifically the S7-200 CN version with order number 6ES7223-1HF22-0XA8. Siemens also produced related EM 223 modules with similar descriptions but different order numbers and I/O configurations.

For replacement applications, always compare the complete Siemens order number, I/O configuration, relay-output requirements and compatibility with the installed S7-200 CPU before purchasing.