1. General Specifications
Parameter Specification
Product Name SM 1231 AI 4×13-bit
Order Number 6ES7231-4HA30-0XB0
Module Type Analog Input
Compatibility S7-1200 PLC System
Electrical Isolation Channel-to-channel
2. Input Specifications
Parameter Specification
Channels 4 (single-ended)
Input Types Voltage/Current
Voltage Ranges ±10V, ±5V, ±2.5V, 0-10V
Current Ranges 0-20mA, 4-20mA
Resolution 13-bit (including sign)
Accuracy ±0.3% of full scale
3. Performance Characteristics
Parameter Specification
Conversion Time 625 μs per channel
Cycle Time 2.5 ms (all channels)
Common Mode Rejection >60 dB
Noise Rejection >40 dB
4. Electrical Specifications
Parameter Specification
Power Supply 24V DC (from CPU)
Power Consumption 2W (typical)
Current Consumption 85mA (24V DC)
Sensor Supply Not available
5. Mechanical Specifications
Parameter Specification
Dimensions (W×H×D) 45 × 100 × 75 mm
Weight 200g
Protection Class IP20
Mounting Right-side CPU expansion
6. Environmental Conditions
Parameter Specification
Operating Temperature -20°C to +60°C
Storage Temperature -40°C to +85°C
Relative Humidity 5% to 95% (non-condensing)
7. Certifications
Standard Compliance
CE Yes
UL Yes
cULus Yes
RoHS Compliant
8. Software Integration
Parameter Specification
Engineering Software TIA Portal (V11 or later)
Diagnostic Capabilities Overflow/Underflow detection
9. Ordering Information
Complete designation: 6ES7231-4HA30-0XB0

Package includes: Analog input module, documentation

10. Typical Applications
Process variable monitoring

Sensor signal acquisition

Quality control systems

Energy management

11. Wiring Notes
Screw terminal connections

Shielded cables recommended

Maximum cable length: 100m (voltage), 200m (current)