Product Description
Key Features
- Exact product identity: SIMATIC S7-1200 SM 1231 analog input module, product type SM 1231, AI 4×16 bit.
- Analog input capacity: 4 analog inputs; current or voltage differential inputs.
- Input ranges: Voltage: ±10 V, ±5 V, ±2.5 V or ±1.25 V. Current: 0 to 20 mA or 4 to 20 mA.
- Supply and consumption: Rated supply: 24 V DC. Current consumption: 65 mA typ.; backplane bus 5 V DC: 80 mA typ.
- Resolution and conversion: Resolution with overrange: 15 bit plus sign. Integration time is parameterizable, and cycle time for all channels is 100 μs max.
- Diagnostics and protection: Diagnostics include supply-voltage monitoring, wire-break detection, diagnostic alarms and input-status LEDs. Protection degree: IP20.
Technical Summary
| Product type | SM 1231, AI 4×16 bit |
|---|---|
| Analog inputs | 4; Current or voltage differential inputs |
| Input ranges | ±10 V, ±5 V, ±2.5 V, ±1.25 V; 0 to 20 mA; 4 to 20 mA |
| Rated supply | 24 V DC |
| Resolution | 15 bit; + sign |
| Cycle time, all channels, max. | 100 μs |
| Current consumption, typ. | 65 mA |
| Protection degree | IP20 |
Frequently Asked Questions
What product identity should be confirmed for Siemens 6ES7231-5ND32-0XB0?
Confirm the complete order number 6ES7231-5ND32-0XB0 and product type SM 1231, AI 4×16 bit.
Which input ranges does this module support?
It supports voltage ranges of ±10 V, ±5 V, ±2.5 V and ±1.25 V, plus current ranges of 0 to 20 mA and 4 to 20 mA.
What supply does the module require?
The rated supply is 24 V DC.
What configuration details should be checked for a part request?
Confirm the 4 analog inputs, current or voltage differential input configuration, required quantity, destination and condition preference.
