SIMATIC S7-1200 SM 1231 Analog Input Module allows analog sensors to be connected without additional amplifiers. It is available as 4 AI and 8 AI types with ±10 V, ±5 V, ±2.5 V or 0-20/4-20 mA ranges and a resolution of 15-bit + sign or 12-bit + sign. SIPLUS versions are also offered.
Technical data
| Product | SM 1231 |
|---|---|
| Product family | SIMATIC S7-1200 |
| Description | Voltage and current (0/4–20 mA) analog input modules |
| Example version | SM 1231 analog input signal module SIMATIC S7-1200, analog input, SM 1231 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15-bit+sign bit |
| Programming | STEP 7 (TIA Portal) |
Article numbers
| Version | Description | Article No. |
|---|---|---|
| Standard | SM 1231 analog input signal module SIMATIC S7-1200, analog input, SM 1231 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15-bit+sign bit | 6ES7231-5ND32-0XB0 |
| Standard | SIMATIC S7-1200, analog input, SM 1231 4 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12-bit+sign (13-bit ADC) | 6ES7231-4HD32-0XB0 |
| Standard | SIMATIC S7-1200, analog input, SM 1231 8 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12-bit+sign or (13-bit ADC) | 6ES7231-4HF32-0XB0 |
| SIPLUS | SIPLUS SM 1231 analog input signal module (Extended temperature range and exposure to environmental substances) Range of ambient temperature 0 ... +55 °C 4 analog inputs, ±10 V, ±5 V, ±2.5 V, or 0 ... 20 mA, 16-bit | 6AG1231-5ND32-4XB0 |
| SIPLUS | 4 analog inputs ±10 V, ±5 V, ±2.5 V, or 0 ... 20 mA; 12-bit + sign | 6AG1231-4HD32-4XB0 |
| SIPLUS | 8 analog inputs, ±10 V, ±5 V, ±2.5 V, or 0 ... 20 mA, 12-bit + sign | 6AG1231-4HF32-4XB0 |
Technical data and article numbers are based on Siemens catalog ST 70 · 2026 (chapter SIMATIC S7-1200) and are for information only. Image is representative.
For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94. Sending the article number is enough.
Tags: SM 1231, siemens s7-1200, simatic plc, sm 1231, 6ES7231-5ND32-0XB0, 6ES7231-4HD32-0XB0, 6ES7231-4HF32-0XB0, 6AG1231-5ND32-4XB0, 6AG1231-4HD32-4XB0, 6AG1231-4HF32-4XB0