Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
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- Part number
- 6ES7231-5PA30-0XB0
- Model no
- SB 1231, AI 1x16 bit RTD
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· From Türkiye
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SIMATIC S7-1200Siemens 6ES7231-5PA30-0XB0 SIMATIC S7-1200 SB 1231 RTD Analog Input Signal Board
SIMATIC S7-1200 SB 1231 RTD signal board, 1 AI, Pt100/Pt1000, 15-bit, wire-break diagnostics.
Description
About the SB 1231, AI 1x16 bit RTD
About the SB 1231, AI 1x16 bit RTD
The Siemens 6ES7231-5PA30-0XB0 is a SIMATIC S7-1200 SB 1231 RTD signal board with one analog input for Pt100, Pt200, Pt500, or Pt1000 resistance thermometers, resolving to 15 bits plus sign. It plugs directly onto a S7-1200 CPU, drawing 24V DC at 5mA typical, and reports wire-break diagnostics through the CPU's diagnostic buffer.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
The 15-bit-plus-sign resolution across Pt100 through Pt1000 ranges lets this signal board double as a general resistance-thermometer input without swapping modules if the sensor type changes on a retrofit. Because it mounts onto the CPU's signal-board slot rather than the side rack, it adds one RTD channel without consuming a signal-module rack slot — pick a full SM 1231 RTD module instead when the application needs more than one RTD channel. Wire-break diagnostics reported through the CPU's alarm system flag a disconnected sensor before it reads as a plausible-but-wrong temperature.
Applications
Adds Pt100/Pt1000 temperature sensing to a compact S7-1200 CPU for oven, chiller, motor-winding, or ambient-temperature monitoring where a full I/O rack slot isn't justified for a single channel.
Specification
Full specification
General information 1
| Product type designation | SB 1231, AI 1x16 bit RTD |
|---|
Supply voltage 1
| Rated value (DC) | 24 V |
|---|
Input current 2
| Current consumption, typ. | 5 mA |
|---|---|
| from backplane bus 5 V DC, typ. | 20 mA |
Show all 81 specifications ↓ Show less ↑77 more values in Identification, Power loss, Analog inputs, Analog outputs, Analog value generation for the inputs, Errors/accuracies, Interrupts/diagnostics/status information, Standards, approvals, certificates, Ambient conditions, Version Classification, General Product Approval, Logistics.
Identification 10
| Part number | 6ES7231-5PA30-0XB0 |
|---|---|
| Type designation | SB 1231, AI 1x16 bit RTD |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408100916 |
| ETIM class | EC001420 |
| eCl@ss | 27242201 |
Power loss 1
| Power loss, typ. | 0.5 W |
|---|
Analog inputs 18
| Number of analog inputs | 1; Resistance thermometer |
|---|---|
| permissible input voltage for current input (destruction limit), max. | ±35 V |
| Technical unit for temperature measurement adjustable | Degrees Celsius/degrees Fahrenheit |
| Input ranges: Voltage | Yes |
| Input ranges: Current | No |
| Input ranges: Thermocouple | No |
| Input ranges: Resistance thermometer | Yes; Platinum (Pt) |
| Input ranges: Resistance | Yes; 150 Ω, 300 Ω, 600 Ω |
| -80 mV to +80 mV: Input resistance (-80 mV to +80 mV) | >= 10 MOhm |
| Input ranges (rated values), resistance thermometer: Pt 100 | Yes |
| Input ranges (rated values), resistance thermometer: Input resistance (Pt 100) | 100 Ω |
| Input ranges (rated values), resistance thermometer: Pt 1000 | Yes |
| Input ranges (rated values), resistance thermometer: Pt 200 | Yes |
| Input ranges (rated values), resistance thermometer: Pt 500 | Yes |
| Input ranges (rated values), resistors: 0 to 150 ohms | Yes |
| Input ranges (rated values), resistors: 0 to 300 ohms | Yes |
| Input ranges (rated values), resistors: 0 to 600 ohms | Yes |
| Thermocouple (TC) Temperature compensation: Parameterizable | No |
Analog outputs 2
| Number of analog outputs | 0 |
|---|---|
| Cable length: shielded, max. | 100 m; shielded, twisted pair |
Analog value generation for the inputs 4
| Measurement principle | integrating |
|---|---|
| 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 | No |
| Integration and conversion time/resolution per channel: Interference voltage suppression for interference frequency f1 in Hz | 85 dB at 10 / 50 / 60 / 400 Hz |
Errors/accuracies 3
| Temperature error (relative to input range), (+/-) | 25 °C ±0.1%, to 55 °C ±0.2% total measurement range |
|---|---|
| Repeat accuracy in steady state at 25 °C (relative to output range), (+/-) | 0.05 % |
| Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency: Common mode interference, min. | 120 dB |
Interrupts/diagnostics/status information 6
| Alarms | Yes |
|---|---|
| Diagnostics function | Yes; Can be read out |
| Alarms: Diagnostic alarm | Yes |
| Diagnoses: Wire break | Yes |
| Diagnostics indication LED: for status of the inputs | Yes |
| Diagnostics indication LED: for maintenance | Yes |
Standards, approvals, certificates 8
| 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 |
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 |
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 | 0.032 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.532 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7231-5PA30-0XB0
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 SB 1231, AI 1x16 bit RTD
Which supply voltage is SB 1231, AI 1x16 bit RTD rated for?
The rated operational voltage of SB 1231, AI 1x16 bit RTD is 24 V AC.
What is the HS code of SB 1231, AI 1x16 bit RTD for customs?
The tariff (HS) code on file for SB 1231, AI 1x16 bit RTD is 85389091.
What is the EAN of SB 1231, AI 1x16 bit RTD?
The EAN (GTIN) of SB 1231, AI 1x16 bit RTD is 6940408100916.
Where does SB 1231, AI 1x16 bit RTD ship from, and how fast?
SB 1231, AI 1x16 bit RTD 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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Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
