Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
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- Part number
- 6ES7233-4HF50-0XB0
- Model no
- SM 1233, AI 4x 14 bit/AQ 4x 14 bit
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- CE
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SIMATIC S7-1200Siemens 6ES7233-4HF50-0XB0 SIMATIC S7-1200 SM 1233 Analog I/O 4AI/4AQ 14-Bit PLC I/O Module
SIMATIC S7-1200 SM 1233 analog I/O module: 4 AI/4 AQ, up to 14-bit resolution, ±10V/±5V/±2.5V/4-20mA ranges, 24V DC supply.
Description
About the SM 1233, AI 4x 14 bit/AQ 4x 14 bit
About the SM 1233, AI 4x 14 bit/AQ 4x 14 bit
The Siemens 6ES7233-4HF50-0XB0 is a SIMATIC S7-1200 SM 1233 analog I/O module with 4 analog inputs and 4 analog outputs on a single 30 mm module. Inputs resolve at up to 14 bit across ±10 V, ±5 V, ±2.5 V, 0-20 mA or 4-20 mA ranges; outputs cover ±10 V, 0-20 mA and 4-20 mA at up to 14 bit resolution. It runs from 24 V DC and reports wire-break and short-circuit diagnostics.
Certifications & Standards
- CE
- UL
- cULus
- RCM
- KC
Selection Notes
The 6ES7233-4HF50-0XB0 combines 4 inputs and 4 outputs on one 30 mm module, which saves backplane slots compared to running separate SM 1231 AI and SM 1232 AQ modules on the same S7-1200 station. Each input channel accepts voltage or current signals independently (±10 V down to ±2.5 V, or 4-20 mA/0-20 mA), so the same module handles transmitters with different signal types without hardware changes. Voltage outputs into loads down to 1000 Ω and current outputs up to 600 Ω cover typical actuator and indicator wiring. Wire-break and short-circuit diagnostics report at the module level, which is useful for detecting field wiring faults without additional sensing hardware.
Applications
Suited to small-to-mid S7-1200 stations that need mixed analog I/O for process values (pressure and temperature transmitters, flow) and proportional outputs (valve positioners, VFD speed references) — skid-mounted machinery, packaging lines, and utility monitoring panels where compact I/O count matters more than channel isolation.
Specification
Full specification
General information 1
| Product type designation | SM 1233, AI 4x 14 bit/AQ 4x 14 bit |
|---|
Supply voltage 3
| Rated value (DC) | 24 V |
|---|---|
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
Input current 2
| Current consumption, typ. | 40 mA |
|---|---|
| from backplane bus 5 V DC, typ. | 80 mA |
Show all 113 specifications ↓ Show less ↑107 more values in Identification, Power loss, Analog inputs, Analog outputs, Analog value generation for the inputs, Analog value generation for the outputs, Errors/accuracies, Interrupts/diagnostics/status information, Potential separation, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Connection method, Mechanics/material, Dimensions, Version Classification, Approvals / Certificates, Logistics.
Identification 10
| Part number | 6ES7233-4HF50-0XB0 |
|---|---|
| Type designation | SM 1233, AI 4x 14 bit/AQ 4x 14 bit |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4047623417422 |
| ETIM class | EC001420 |
| eCl@ss | 27242201 |
Power loss 1
| Power loss, typ. | 4.7 W |
|---|
Analog inputs 17
| 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. | 0.625 ms; at 400 Hz rejection |
| Input ranges: Voltage | Yes; ±10V, ±5V, ±2.5V |
| Input ranges: Current | Yes; 4 to 20 mA, 0 to 20 mA |
| 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: Input resistance (0 to 20 mA) | 270 Ω |
| Input ranges (rated values), currents: 4 mA to 20 mA | Yes |
| Input ranges (rated values), currents: Input resistance (4 mA to 20 mA) | 270 Ω |
| Cable length: shielded, max. | 100 m; shielded, twisted pair |
Analog outputs 7
| Number of analog outputs | 4; Current or voltage |
|---|---|
| Output ranges, voltage: -10 V to +10 V | Yes |
| Output ranges, current: 0 to 20 mA | Yes |
| Output ranges, current: 4 mA to 20 mA | Yes |
| Load impedance (in rated range of output): with voltage outputs, min. | 1 000 Ω |
| Load impedance (in rated range of output): with current outputs, max. | 600 Ω |
| Cable length: shielded, max. | 100 m; shielded, twisted pair |
Analog value generation for the inputs 9
| Measurement principle | successive approximation |
|---|---|
| Integration and conversion time/resolution per channel: Resolution with overrange (bit including sign), max. | 13 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 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 |
Analog value generation for the outputs 1
| Integration and conversion time/resolution per channel: Resolution with overrange (bit including sign), max. | 14 bit; Voltage: 14 bit; Current : 13 bit |
|---|
Errors/accuracies 5
| Temperature error (relative to input range), (+/-) | 25 °C ±0.1 % / -20 °C to 60 °C ±0.2 % of the full-scale deflection |
|---|---|
| Temperature error (relative to output range), (+/-) | 25 °C ±0.3 % / -20 °C to 60 °C ±0.6 % of the full-scale deflection |
| 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. | 2 V |
Interrupts/diagnostics/status information 8
| Diagnostics function | Yes |
|---|---|
| Alarms: Diagnostic alarm | Yes |
| Diagnoses: Monitoring the supply voltage | Yes |
| Diagnoses: Wire break | Yes |
| Diagnoses: Short-circuit | Yes |
| Diagnostics indication LED: DIAG LED | Yes |
| Diagnostics indication LED: for status of the inputs | Yes |
| Diagnostics indication LED: for status of the outputs | Yes |
Potential separation 2
| Potential separation analog inputs: between the channels and the power supply of the electronics | No |
|---|---|
| Potential separation analog outputs: between the channels and the power supply of the electronics | No |
Degree and class of protection 1
| IP degree of protection | IP20 |
|---|
Standards, approvals, certificates 14
| Siemens Eco Profile (SEP) | Siemens EcoTech |
|---|---|
| CE mark | Yes |
| CSA approval | No |
| UL approval | Yes |
| cULus | Yes |
| FM approval | No |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | No |
| Ecological footprint: environmental product declaration Global warming potential | Yes; type 2 acc. to ISO 14021 |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 32.2 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 7.96 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 24.5 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.358 kg |
Ambient conditions 17
| 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. | 40 °C; at max. voltages and max. specifications |
| 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. | 540 hPa |
| Air pressure acc. to IEC 60068-2-13: Operation, max. | 1 140 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 540 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 140 hPa |
| Altitude during operation relating to sea level: Installation altitude, min. | -1 000 m |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
| Vibrations: Vibration resistance during operation acc. to IEC 60068-2-6 | 3.5 mm from 5 - 8.4 Hz, 1g from 8.4 - 150 Hz |
| Vibrations: Operation, tested according to IEC 60068-2-6 | Yes |
| Shock testing: tested according to IEC 60068-2-27 | Yes; IEC 68, Part 2-27 half-sine: strength of the shock 15 g (peak value), duration 11 ms |
| 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 | No |
|---|
Mechanics/material 1
| Enclosure material (front): Plastic | Yes |
|---|
Dimensions 2
| Width | 30 mm |
|---|---|
| Height | 125 mm |
Version Classification 2
| eClass | 16 27-24-22-01 |
|---|---|
| ETIM | 10 EC001420 |
Approvals / Certificates 2
| General Product Approval Miscellaneous | For use in hazard- |
|---|---|
| General Product Approval EMV | ous locations |
Logistics 7
| Net weight | 0.174 kg |
|---|---|
| Package dimensions | 150 × 47 × 110 mm |
| Country of origin | CN |
| Shipping weight | 0.674 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7233-4HF50-0XB0
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Ask us for the datasheet
Certifications
Certifications and standards
- CE
- UL
- CE mark
- UL approval
- cULus
- RCM (formerly C-TICK)
- KC approval
Quick answers
Questions about the SM 1233, AI 4x 14 bit/AQ 4x 14 bit
Which supply voltage is SM 1233, AI 4x 14 bit/AQ 4x 14 bit rated for?
The rated operational voltage of SM 1233, AI 4x 14 bit/AQ 4x 14 bit is 24 V AC.
What is the HS code of SM 1233, AI 4x 14 bit/AQ 4x 14 bit for customs?
The tariff (HS) code on file for SM 1233, AI 4x 14 bit/AQ 4x 14 bit is 85389091.
What is the EAN of SM 1233, AI 4x 14 bit/AQ 4x 14 bit?
The EAN (GTIN) of SM 1233, AI 4x 14 bit/AQ 4x 14 bit is 4047623417422.
Where does SM 1233, AI 4x 14 bit/AQ 4x 14 bit ship from, and how fast?
SM 1233, AI 4x 14 bit/AQ 4x 14 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
