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| Place of Origin: | U.K. |
| Brand Name: | Siemens |
| Certification: | COO & COC |
| Model Number: | 6ES7231-5ND32-0XB0 |
6ES7231-5ND32-0XB0 SIEMENS SIMATIC S7-1200 Analog Input module SM 1231 AI 4xU/I/RTD/TC ST
The Siemens 6ES7231-5ND32-0XB0 is a high-performance 4-channel analog input (AI) module designed for the SIMATIC S7-1200 programmable logic controller (PLC) system. This versatile module supports a wide range of sensor types—including thermocouples (TC), resistance temperature detectors (RTD), voltage (±80 mV to ±10 V), and current (0–20 mA / 4–20 mA)—making it ideal for precise temperature monitoring and general-purpose analog signal acquisition in industrial automation, process control, and building management applications.
Engineered for flexibility and accuracy, each of the four channels can be individually configured via TIA Portal to match the connected sensor type, enabling mixed-signal applications within a single module. Integrated cold junction compensation (CJC) ensures high-precision thermocouple measurements, while built-in filtering, diagnostics, and overrange detection enhance reliability and simplify troubleshooting.
Product Overview: Siemens 6ES7231-5ND32-0XB0
| Manufacturer | Siemens AG – Digital Industries |
| Product Family | SIMATIC S7-1200 PLC System |
| Order Number | 6ES7231-5ND32-0XB0 |
| Module Type | 4-Channel Universal Analog Input Module |
| Resolution | Up to 16 bits (depending on signal type and range) |
| Accuracy | As high as ±0.1% of full scale (for RTD/TC with CJC) |
| Input Impedance | > 1 MΩ (voltage), 250 Ω (current) |
| Sampling Time | ~240 ms per channel (typical for TC/RTD); faster for voltage/current |
| Galvanic Isolation | Between channels and backplane bus (basic insulation) |
Product details pictures
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