| Product Type | SIMATIC S7-300 Analog Input SM 331 |
| Product Model | 6ES7331-7HF01-0AB0 |
| Power loss | Power loss, typical value 1.5 W |
| Product Dimensions | 40 MM × 125 MM × 117 MM |
| Input current | Self load voltage L+(no-load), maximum value 50 mA Incoming backplane bus DC 5 V, maximum value 100 mA |
| Weight | 230 g |
Supports Isochronous Mode: Enables microsecond-level synchronized sampling across multiple channels—ideal for high-speed process monitoring or motion control requiring precise time alignment.
Compact Design & Easy Installation: Standard S7-300 footprint with DIN-rail mounting—space-saving and suitable for compact control panels.
Industrial-Grade Reliability: Operates reliably from 0°C to +60°C, compliant with IEC industrial EMC, vibration, and noise immunity standards—ensuring stable performance in demanding environments.
Seamless Integration with STEP 7 Engineering Suite: Fully compatible with Siemens STEP 7 software—supports automatic module recognition, graphical configuration, online commissioning, and firmware updates—significantly improving engineering efficiency and system maintainability.
High-Performance Analog Input Module for S7-300 Series: Model SM 331 or AI 8xU/I/RTD/TC, a signal module in the SIMATIC S7-300 PLC system—provides 8 high-precision analog input channels, supporting multiple signal types for complex process control applications.
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