Siemens Digital I/O SM 1223, 16DI/16DO, 2A relay

Product Overview

The SIMATIC S7-1200 Digital I/O Module SM 1223 delivers high-density I/O expansion with 16 digital inputs and 16 relay outputs. Featuring 24V DC sink/source inputs and 2A relay switching capacity, this module provides comprehensive digital signal processing for demanding industrial automation applications requiring extensive I/O capabilities.

Key Features

• 16 Digital Inputs + 16 Relay Outputs: Maximum I/O density with 24V DC sink/source inputs and 2A relay switching
• Sink/Source Compatibility: Universal input configuration supporting both NPN and PNP sensors
• High-Power Relay Outputs: 2A switching capacity per relay for controlling motors, solenoids, and heavy loads
• Galvanic Isolation: Complete electrical isolation between channels for enhanced system protection
• Compact High-Density Design: 70mm width with maximum I/O count for space-efficient installations
• Comprehensive Diagnostics: Channel-specific status indication and fault detection capabilities

Technical Specifications

• I/O Configuration: 16 DI (24V DC) + 16 DO (Relay 2A)
• Dimensions: 70 × 100 × 75 mm (W × H × D) | Weight: 0.319 kg
• Input Voltage: 24V DC sink/source | Input Current: 4mA per channel
• Output Rating: 2A per relay contact | Response Time: 0.2ms signal delay
• Operating Temperature: -25°C to +60°C | Protection: IP20
• Connection: Screw/spring clamp terminals | Isolation: Galvanic isolation between channels

Applications & Integration

Primary Applications:

• Large-scale manufacturing systems with extensive I/O requirements
• Motor control centers and industrial machinery automation
• Process control systems requiring high-density digital interfacing

System Compatibility:

• All S7-1200 CPU models except CPU 1211C (requires signal modules)
• TIA Portal configuration with STEP 7 Basic programming environment
• Up to 8 modules per CPU with hot-swappable installation
• Standard 35mm DIN rail mounting with integrated connections

Quality & Compliance

• Status: Active Product (PM300) | Origin: Germany
• EAN: 6940408102019 | UPC: 887621206949
• RoHS Compliant: Since 15.03.2013 | WEEE: Take-back obligation applies
• REACH: Contains lead, lead oxide, and BPA above 0.1% w/w (safe when used as intended)

Package Contents

• 1 × SM 1223 Module (16 DI/16 DO Relay), technical documentation, DIN rail hardware

Download existing graphical data for this product:

• Technical Datasheet
• Product Information Page
• SM 1223 Product Family
• TIA Portal Documentation
• Technical Specifications