Key Features
- 4 analog inputs: Number of analog inputs: 4; current or voltage differential inputs.
- Voltage and current input ranges: Voltage: +/-10 V, +/-5 V, +/-2.5 V or +/-1.25 V. Current: 0 to 20 mA or 4 to 20 mA.
- Resolution and conversion speed: Resolution with overrange: 15 bit; + sign. Cycle time for all channels: max. 100 μs.
- Built-in diagnostics: Alarms, diagnostics function, diagnostic alarm, monitoring the supply voltage, and wire break.
- Supply and protection: Rated value (DC): 24 V. IP degree of protection: IP20.
Applications
- Analog signal acquisition: Acquiring 4 voltage or current analog signals in a SIMATIC S7-1200 station.
- Process signal reading: Reading 0 to 20 mA and 4 to 20 mA input signals for control system processing.
Technical Summary
| Product type designation | SM 1231, AI 4×16 bit |
|---|---|
| Number of analog inputs | 4; Current or voltage differential inputs |
| Voltage input ranges | +/-10 V, +/-5 V, +/-2.5 V or +/-1.25 V |
| Current input ranges | 4 to 20 mA, 0 to 20 mA |
| Resolution with overrange | 15 bit; + sign |
| Cycle time, all channels, max. | 100 μs |
| Rated value (DC) | 24 V |
| Current consumption, typ. | 65 mA |
| from backplane bus 5 V DC, typ. | 80 mA |
| Power loss, typ. | 1.8 W |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is the Siemens 6ES7231-5ND32-0XB0 used for?
It is a SIMATIC S7-1200 SM 1231 analog input module with 4 analog inputs.
Which input signal ranges does this SM 1231 module support?
It supports +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 V, 0-20 mA, and 4-20 mA.
What is the resolution of the 6ES7231-5ND32-0XB0 analog input module?
The resolution with overrange is 15 bit; + sign.
What supply and protection details are listed for this module?
The rated DC supply is 24 V, and the IP degree of protection is IP20.
