Technical Summary
| Product type designation | SM 1231, AI 4×13 bit |
|---|---|
| Number of analog inputs | 4; Current or voltage differential inputs |
| Voltage input ranges | Yes; ±10V, ±5V, ±2.5V |
| Current input ranges | Yes; 4 to 20 mA, 0 to 20 mA |
| Resolution with overrange | 12 bit; + sign |
| Rated value (DC) | 24 V |
| Current consumption, typ. | 45 mA |
| from backplane bus 5 V DC, typ. | 80 mA |
| Power loss, typ. | 1.5 W |
| Cycle time (all channels) max. | 625 μs |
| IP degree of protection | IP20 |
Key Features
SIMATIC S7-1200 analog input module
SM 1231 for the SIMATIC S7-1200 family.
SM 1231 for the SIMATIC S7-1200 family.
4 analog inputs
4 AI with current or voltage differential inputs.
4 AI with current or voltage differential inputs.
Voltage and current ranges
Supports +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA.
Supports +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA.
12 bit+sign resolution
Resolution with overrange: 12 bit; + sign (13 bit ADC).
Resolution with overrange: 12 bit; + sign (13 bit ADC).
IP20 protection
IP degree of protection: IP20.
IP degree of protection: IP20.
Applications
Voltage signal acquisition
Reading analog voltage signals with +/-10 V, +/-5 V, or +/-2.5 V input ranges.
Reading analog voltage signals with +/-10 V, +/-5 V, or +/-2.5 V input ranges.
Current signal acquisition
Reading analog current signals with 0-20 mA or 4-20 mA input ranges.
Reading analog current signals with 0-20 mA or 4-20 mA input ranges.
Frequently Asked Questions
What is Siemens 6ES7231-4HD32-0XB0?
It is an SM 1231 analog input module for SIMATIC S7-1200.
How many analog inputs does 6ES7231-4HD32-0XB0 have?
It has 4 analog inputs with current or voltage differential inputs.
Which input ranges does the SM 1231 AI 4×13 bit support?
It supports +/-10 V, +/-5 V, +/-2.5 V, 0-20 mA, and 4-20 mA.
What is the resolution of 6ES7231-4HD32-0XB0?
Resolution with overrange is 12 bit; + sign (13 bit ADC).
What is the IP rating and supply voltage of this module?
The module has IP20 protection and a rated value (DC) of 24 V.
