Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
- Part number
- 6ES7231-4HF32-0XB0
- Model no
- SM 1231, AI 8x13 bit
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· From Türkiye
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SIMATIC S7-1200Siemens 6ES7231-4HF32-0XB0 SIMATIC S7-1200 SM 1231 AI 8x13-Bit Analog Input Module
SIMATIC S7-1200 SM 1231 analog input, 8 channels, +/-10V or 4-20mA, 13-bit ADC.
Description
About the SM 1231, AI 8x13 bit
About the SM 1231, AI 8x13 bit
The Siemens 6ES7231-4HF32-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 8 channels, configurable for +/-10 V, +/-5 V, +/-2.5 V, 0-20 mA, or 4-20 mA, at 12-bit + sign (13-bit ADC) resolution. It runs on 24 V DC and draws 60 mA typical from the supply.
Certifications & Standards
- CE mark
- CSA approval
- UL approval
- cULus
- FM approval
- RCM
- KC approval
- Marine approval
Selection Notes
All 8 channels are software-selectable between +/-2.5 V and +/-10 V or 0/4-20 mA, so this module covers most process transmitters without hardware changes -- the 4-channel SM 1231 variant is the better fit when a station only needs half the input count and rack space is tight. A 625 microsecond cycle time across all 8 channels handles moderate-speed loops like pressure or flow; a dedicated high-speed analog module suits faster measurement needs. The basic error limit of +/-0.1% at 25C on both voltage and current ranges is tight enough for most process-monitoring loops without external calibration.
Applications
Process signal acquisition from 4-20 mA transmitters and pressure, level, or flow sensors on SIMATIC S7-1200 stations; machine monitoring and potentiometer or voltage feedback inputs.
Specification
Full specification
General information 1
| Product type designation | SM 1231, AI 8x13 bit |
|---|
Supply voltage 1
| Rated value (DC) | 24 V |
|---|
Input current 2
| Current consumption, typ. | 60 mA |
|---|---|
| from backplane bus 5 V DC, typ. | 90 mA |
Show all 94 specifications ↓ Show less ↑90 more values in Identification, Power loss, Analog inputs, Errors/accuracies, Interrupts/diagnostics/status information, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Connection method, Mechanics/material, Dimensions, Weights, General Product Approval, Logistics.
Identification 10
| Part number | 6ES7231-4HF32-0XB0 |
|---|---|
| Type designation | SM 1231, AI 8x13 bit |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408102040 |
| ETIM class | EC001420 |
| eCl@ss | 27242201 |
Power loss 1
| Power loss, typ. | 1.5 W |
|---|
Analog inputs 26
| Number of analog inputs | 8; Current or voltage differential inputs |
|---|---|
| permissible input voltage for voltage input (destruction limit), max. | 35 V |
| permissible input current for current input (destruction limit), max. | 40 mA |
| Cycle time (all channels) max. | 625 µs |
| Input ranges: Voltage | Yes; ±10V, ±5V, ±2.5V |
| Input ranges: Current | Yes; 4 to 20 mA, 0 to 20 mA |
| Input ranges: Thermocouple | No |
| Input ranges: Resistance thermometer | No |
| Input ranges: Resistance | No |
| Input ranges (rated values), voltages: -10 V to +10 V | Yes |
| Input ranges (rated values), voltages: Input resistance (-10 V to +10 V) | ≥9 MOhm |
| Input ranges (rated values), voltages: -2.5 V to +2.5 V | Yes |
| Input ranges (rated values), voltages: Input resistance (-2.5 V to +2.5 V) | ≥9 MOhm |
| Input ranges (rated values), voltages: -5 V to +5 V | Yes |
| Input ranges (rated values), voltages: Input resistance (-5 V to +5 V) | ≥9 MOhm |
| Input ranges (rated values), currents: 0 to 20 mA | Yes |
| Input ranges (rated values), currents: Input resistance (0 to 20 mA) | 280 Ω |
| Input ranges (rated values), currents: 4 mA to 20 mA | Yes |
| Input ranges (rated values), currents: Input resistance (4 mA to 20 mA) | 280 Ω |
| Thermocouple (TC) Temperature compensation: Parameterizable | No |
| Analog value generation for the inputs Integration and conversion time/resolution per channel: Resolution with overrange (bit including sign), max. | 12 bit; + sign |
| Smoothing of measured values: parameterizable | Yes |
| Smoothing of measured values: Step: None | Yes |
| Smoothing of measured values: Step: low | Yes |
| Smoothing of measured values: Step: Medium | Yes |
| Smoothing of measured values: Step: High | Yes |
Errors/accuracies 4
| Temperature error (relative to input range), (+/-) | 25 °C ±0.1%, to 55 °C ±0.2% total measurement range |
|---|---|
| Basic error limit (operational limit at 25 °C): Voltage, relative to input range, (+/-) | 0.1 % |
| Basic error limit (operational limit at 25 °C): Current, relative to input range, (+/-) | 0.1 % |
| Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency: Common mode voltage, max. | 12 V |
Interrupts/diagnostics/status information 7
| Alarms | Yes |
|---|---|
| Diagnostics function | Yes |
| Alarms: Diagnostic alarm | Yes |
| Diagnoses: Monitoring the supply voltage | Yes |
| Diagnoses: Wire break | Yes |
| Diagnostics indication LED: for status of the inputs | Yes |
| Diagnostics indication LED: for maintenance | Yes |
Degree and class of protection 1
| IP degree of protection | IP20 |
|---|
Standards, approvals, certificates 13
| CE mark | Yes |
|---|---|
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| Ecological footprint: environmental product declaration Global warming potential | Yes |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 43.1 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 7.62 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 36 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.544 kg |
Ambient conditions 13
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| Ambient temperature during operation: min. | -20 °C |
| Ambient temperature during operation: max. | 60 °C |
| Ambient temperature during operation: horizontal installation, min. | -20 °C |
| Ambient temperature during operation: vertical installation, min. | -20 °C |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13: Operation, min. | 795 hPa |
| Air pressure acc. to IEC 60068-2-13: Operation, max. | 1 080 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 660 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 080 hPa |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
| Pollutant concentrations: SO2 at RH < 60% without condensation | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free |
Connection method 1
| required front connector | Yes |
|---|
Mechanics/material 1
| Enclosure material (front): Plastic | Yes |
|---|
Dimensions 3
| Width | 45 mm |
|---|---|
| Height | 100 mm |
| Depth | 75 mm |
Weights 1
| Weight, approx. | 180 g |
|---|
General Product Approval 3
| Miscellaneous Manufacturer Declara- Metrological Approval | tion For use in hazard- |
|---|---|
| General Product Approval EMV | ous locations |
| China RoHS Manufacturer Declara- | tion |
Logistics 6
| Net weight | 0.187 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.687 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7231-4HF32-0XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- CSA approval
- UL approval
- cULus
- FM approval
- RCM (formerly C-TICK)
- KC approval
- Marine approval
Quick answers
Questions about the SM 1231, AI 8x13 bit
Which supply voltage is SM 1231, AI 8x13 bit rated for?
The rated operational voltage of SM 1231, AI 8x13 bit is 24 V AC.
What is the HS code of SM 1231, AI 8x13 bit for customs?
The tariff (HS) code on file for SM 1231, AI 8x13 bit is 85389091.
What is the EAN of SM 1231, AI 8x13 bit?
The EAN (GTIN) of SM 1231, AI 8x13 bit is 6940408102040.
Where does SM 1231, AI 8x13 bit ship from, and how fast?
SM 1231, AI 8x13 bit ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
