Key Features
- SM 1231 analog input module: SIMATIC S7-1200 G2 SM 1231 analog input module for 8 AI.
- 8 analog inputs: 8x AI with current or voltage differential inputs.
- 14 bit ADC: Analog inputs with 14 bit ADC.
- Supported input ranges: Voltage: +/-10 V, +/-5 V, +/-2.5 V. Current: 0 to 20 mA and 4 to 20 mA.
- Supply and power data: Rated value (DC): 24 V. Current consumption, typ.: 45 mA. Power loss, typ.: 2.5 W.
- Protection and diagnostics: IP20, with diagnostics function, diagnostic alarm, supply voltage monitoring, wire break monitoring, and DIAG LED.
Technical Summary
| Product type designation | SM 1231, AI 8x 14 bit |
|---|---|
| Number of analog inputs | 8; Current or voltage differential inputs |
| Analog input resolution | 14 bit ADC |
| Voltage input ranges | +/-10 V, +/-5 V, +/-2.5 V |
| Current input ranges | 0 to 20 mA, 4 to 20 mA |
| Rated supply voltage (DC) | 24 V |
| Permissible supply voltage range (DC) | 20.4 V to 28.8 V |
| Typical current consumption | 45 mA |
| Typical power loss | 2.5 W |
| Cycle time, all channels | 1.25 ms; at 400 Hz rejection |
| IP degree of protection | IP20 |
Applications
- Analog signal acquisition: Input of voltage and current signals on 8 analog channels.
Frequently Asked Questions
What is the exact Siemens model of this analog input module?
6ES7231-4HF50-0XB0, SIMATIC S7-1200 G2 SM 1231 analog input module.
How many analog inputs does 6ES7231-4HF50-0XB0 have?
It has 8 analog inputs with current or voltage differential inputs.
What input ranges are supported by this SM 1231 module?
Voltage: +/-10 V, +/-5 V, +/-2.5 V. Current: 0 to 20 mA and 4 to 20 mA.
What supply voltage does the module require?
Rated value (DC): 24 V. Permissible range (DC): 20.4 V to 28.8 V.
