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
- 6ES7231-5ND32-0XB0
- Model no
- SM 1231, AI 4x16 bit
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· From Türkiye
0
- CE
SIMATIC S7-1200Siemens 6ES7231-5ND32-0XB0 SIMATIC S7-1200 SM 1231 AI 4x16bit 0-20mA/+-10V PLC I/O Module
Siemens SM 1231 analog input module, 4AI, 16-bit+sign, 0-20mA/4-20mA, +/-10V ranges.
Description
About the SM 1231, AI 4x16 bit
About the SM 1231, AI 4x16 bit
The Siemens SIMATIC S7-1200 SM 1231 (6ES7231-5ND32-0XB0) is a 4-channel analog input module resolving 15 bits plus sign, accepting voltage ranges from +/-1.25 V up to +/-10 V or current ranges of 0-20 mA and 4-20 mA. It runs from a 24 V DC supply at 65 mA typical, includes wire-break diagnostics, and carries an IP20 rating for cabinet mounting.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
With 15-bit-plus-sign resolution and a 100 microsecond cycle time across all channels, this module suits process signals needing fine granularity, such as pressure transmitters on the 4-20 mA range, rather than simple on/off sensing. The four independently configurable voltage and current ranges mean one module can mix sensor types on a single S7-1200 station instead of stocking separate voltage-only and current-only cards. Diagnostic alarm and wire-break detection are active per channel, useful when the loop must flag a disconnected sensor rather than reading a false zero.
Applications
Used for reading process transmitters, such as pressure, level, and flow transmitters with 4-20 mA output, and precision voltage signals into a SIMATIC S7-1200 station in small to mid-size machine and process control panels.
Specification
Full specification
General information 1
| Product type designation | SM 1231, AI 4x16 bit |
|---|
Supply voltage 1
| Rated value (DC) | 24 V |
|---|
Input current 2
| Current consumption, typ. | 65 mA |
|---|---|
| from backplane bus 5 V DC, typ. | 80 mA |
Show all 85 specifications ↓ Show less ↑81 more values in Identification, Power loss, Analog inputs, Analog value generation for the inputs, Errors/accuracies, Interrupts/diagnostics/status information, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Version Classification, General Product Approval, Logistics.
Identification 10
| Part number | 6ES7231-5ND32-0XB0 |
|---|---|
| Type designation | SM 1231, AI 4x16 bit |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408102088 |
| ETIM class | EC001420 |
| eCl@ss | 27242201 |
Power loss 1
| Power loss, typ. | 1.8 W |
|---|
Analog inputs 18
| Number of analog inputs | 4; 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. | 100 µs |
| Input ranges: Voltage | Yes; ±10V, ±5V, ±2.5V or ±1.25V |
| 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: -1.25 V to +1.25 V | Yes |
| Input ranges (rated values), voltages: -10 V to +10 V | Yes |
| Input ranges (rated values), voltages: Input resistance (-10 V to +10 V) | ≥1 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) | ≥1 MOhm |
| Input ranges (rated values), voltages: -5 V to +5 V | Yes |
| Input ranges (rated values), voltages: Input resistance (-5 V to +5 V) | ≥1 MOhm |
| Input ranges (rated values), currents: 0 to 20 mA | Yes |
| Input ranges (rated values), currents: 4 mA to 20 mA | Yes |
Analog value generation for the inputs 8
| Integration and conversion time/resolution per channel: Resolution with overrange (bit including sign), max. | 15 bit; + sign |
|---|---|
| Integration and conversion time/resolution per channel: Integration time, parameterizable | Yes |
| Integration and conversion time/resolution per channel: Interference voltage suppression for interference frequency f1 in Hz | 40 dB, DC to 60 V for interference frequency 50 / 60 Hz |
| 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% / ±0.3% 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 7
| 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 |
Version Classification 4
| eClass | 16 27-24-22-01 |
|---|---|
| ETIM | 10 EC001420 |
| IDEA | 4 3562 |
| UNSPSC | 15 32-15-17-05 |
General Product Approval 2
| Miscellaneous Manufacturer Declara- Metrological Approval tion | For use in hazard- |
|---|---|
| General Product Approval EMV | ous locations |
Logistics 6
| Net weight | 0.161 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.661 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7231-5ND32-0XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE
- 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 4x16 bit
Which supply voltage is SM 1231, AI 4x16 bit rated for?
The rated operational voltage of SM 1231, AI 4x16 bit is 24 V AC.
What is the HS code of SM 1231, AI 4x16 bit for customs?
The tariff (HS) code on file for SM 1231, AI 4x16 bit is 85389091.
What is the EAN of SM 1231, AI 4x16 bit?
The EAN (GTIN) of SM 1231, AI 4x16 bit is 6940408102088.
Where does SM 1231, AI 4x16 bit ship from, and how fast?
SM 1231, AI 4x16 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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Reviews
Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
