Siemens SIMATIC S7-1200 SM 1223 Digital I/O Module, 8 DI 24V DC, 8 DO Relay, 6ES7223-5PH50-0XB0

The Siemens SIMATIC S7-1200 SM 1223 is a compact digital input/output module designed for the SIMATIC S7-1200 controller system. It combines 8 digital inputs (24 V DC) and 8 digital outputs (relay type) in a single unit, providing a space-saving solution for industrial automation applications. The module is DIN rail mountable and features electrical isolation between channels and the backplane bus for reliable operation in harsh environments.

Advantages

Integrated 8 DI and 8 DO in one module reduces wiring and cabinet space. Relay outputs allow switching of both DC and AC loads up to 2 A per channel. Configurable input type (sink/source) offers flexibility. Status LEDs provide quick diagnostics. Firmware updateable via the CPU for future enhancements.

Suitable for

• Industrial automation and control systems
• Machine building and factory automation
• Process control and monitoring
• Building automation

Key specifications

• Product Type: Digital I/O Module
• Series: SIMATIC S7-1200
• Module Type: SM 1223
• Number of Digital Inputs: 8
• Digital Input Voltage: 24 V DC
• Digital Input Type: Sink/Source (configurable)
• Number of Digital Outputs: 8
• Digital Output Type: Relay
• Digital Output Current (per channel): 2 A
• Digital Output Switching Voltage: Max. 30 V DC / 250 V AC
• Electrical Isolation: Yes (between channels and backplane bus)
• Mounting Type: DIN Rail
• Operating Temperature: 0 to 55 °C
• Power Consumption: Max. 2.5 W (from backplane bus)
• Status Indicators: LEDs for input/output status
• Firmware Update: Yes (via CPU)
• Compatibility: SIMATIC S7-1200 CPUs
• Dimensions (WxHxD): 45 mm x 100 mm x 75 mm

Recommendations

This module is ideal for expanding the I/O capacity of your S7-1200 system. Ensure compatibility with your CPU firmware version. For high-current or inductive loads, consider external protection.