Product Overview

SIMATIC S7-1200, Digital input SM 1226, F-DI 16X 24 V DC, PROFIsafe, 70 mm overall width, up to PL E (ISO 13849-1)/ SIL3 (IEC 61508). This fail-safe digital input module enables the implementation of safety-related application requirements integrated into the overall automation system, providing certified functional safety for critical industrial applications.

Key Features

Safety Integration:

• Fail-safe digital input module for safety-critical applications
• Integrated safety functions for fail-safe operation
• PROFIsafe communication protocol support
• Seamless integration into SIMATIC S7-1200 safety systems

Safety Certifications:

• Performance Level: Up to PL E (ISO 13849-1)
• Safety Integrity Level: SIL3 (IEC 61508)
• Functional Safety: Certified for safety-related control functions
• Standards Compliance: Meets international safety standards

Technical Specifications:

• Digital Inputs: 16 channels, 24 V DC
• Module Width: 70 mm overall width
• Input Type: Fail-safe digital inputs with dual-channel monitoring
• Communication: PROFIsafe protocol for safety communication

Technical Specifications

Input Characteristics:

• Input Channels: 16 fail-safe digital inputs
• Input Voltage: 24 V DC
• Input Type: Dual-channel fail-safe inputs
• Input Current: Per channel monitoring
• Response Time: Optimized for safety applications

Physical Characteristics:

• Net Weight: 0.256 kg
• Dimensions: 70 mm width × 100 mm height × 75 mm depth
• Mounting: DIN rail mounting for S7-1200 system
• Packaging Dimensions: 8.80 x 10.80 x 8.50 cm

Communication and Integration:

• Protocol: PROFIsafe over PROFINET
• Communication: Integrated safety communication
• CPU Compatibility: S7-1200 fail-safe CPUs (CPU 1214FC, CPU 1215FC)
• System Integration: Seamless integration into TIA Portal

Safety Features:

• Diagnostic Functions: Comprehensive diagnostic monitoring
• Error Detection: Automatic error detection and signaling
• Redundancy: Dual-channel input monitoring
• Safety Time: Configurable safety response times

Standards and Compliance:

• RoHS Compliance: Yes, since 27.11.2014
• WEEE Take-Back Obligation: Yes
• Export Control: AL: N / ECCN: 9N9999
• Country of Origin: China

Product Information:

• EAN: 4025515082897
• UPC: 804766054655
• Packaging Quantity: 1 piece
• Quantity Unit: 1 Piece

Applications

The SM 1226 fail-safe digital input module is ideal for:

• Emergency stop systems and safety circuits
• Light curtains and safety barriers
• Safety door monitoring systems
• Machine safety applications
• Process safety interlocks
• Burner management systems
• Safety-related PLC applications
• Functional safety implementations

Safety Functions

Fail-Safe Operation:

• Automatic transition to safe state on fault detection
• Continuous monitoring of input channels
• Integrated safety logic processing
• Predictable fail-safe behavior

Diagnostic Capabilities:

• Real-time monitoring of input status
• Fault detection and reporting
• Safety integrity monitoring
• Maintenance and service diagnostics

System Integration:

• Compatible with TIA Portal safety engineering
• Integrated into overall automation architecture
• Scalable safety system design
• Simplified safety programming

Installation and Configuration

Hardware Installation:

• Simple DIN rail mounting
• Compact 70mm width design
• Standard S7-1200 system integration
• Plug-and-play connectivity

Software Configuration:

• TIA Portal engineering environment
• Safety program development tools
• Comprehensive function blocks
• Safety validation and verification

Connectivity

Terminal Configuration:

• 16 individual digital input terminals
• 24 V DC power supply connections
• Functional earth connection
• Sensor supply outputs (Vs1, Vs2)

Wiring Support:

• Dual-channel input wiring
• Color-coded terminal identification
• Comprehensive wiring diagrams
• Installation guidelines

REACH Compliance Notice

This product contains substances from the REACH candidate list in concentrations higher than 0.1% weight by weight (w/w):

• Lead - Used in electronic components
• Lead monoxide (lead oxide) - Present in electronic assemblies
• Bisphenol A (BPA) - Used in plastic components

Based on current information, these substances do not pose risk when the product is used as intended, including disposal. Please refer to product documentation for additional information.

Download existing graphical data for this product:

• Product Information and Technical Data
• S7-1200 Functional Safety Manual
• Safety Applications with S7-1200 FC CPU
• Product Datasheet
• Technical Support Documentation