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
- 6ES7233-4HD50-0XB0
- Model no
- SB 1233, AI 2x 14 bit/AQ 2x 14 bit
In stock · 50+
Dispatch
Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days.
· From Türkiye
0
SIMATIC S7-1200Siemens 6ES7233-4HD50-0XB0 SIMATIC S7-1200 SB 1233 Analog I/O 2AI/2AQ PLC I/O Module
SIMATIC S7-1200 SB 1233 signal board: 2 AI/2 AQ, 14-bit, 0.625ms cycle time, 24V DC supply.
Description
About the SB 1233, AI 2x 14 bit/AQ 2x 14 bit
About the SB 1233, AI 2x 14 bit/AQ 2x 14 bit
The Siemens 6ES7233-4HD50-0XB0 is a SIMATIC S7-1200 SB 1233 signal board that adds 2 analog inputs and 2 analog outputs directly to the CPU front, each with 14-bit resolution. Inputs accept +/-10V, +/-5V, +/-2.5V or 0-20mA/4-20mA; outputs cover +/-10V, 0-20mA or 4-20mA. Cycle time across all channels is 0.625ms, and the board draws its supply from the CPU's 24V DC bus.
Certifications & Standards
- CE mark
- UL approval
- cULus
- RCM
- KC approval
Selection Notes
The SB 1233 mounts on the S7-1200 CPU front and does not occupy a rack slot, so it is the option to reach for when a station needs a small increment of analog I/O rather than a full SM module. Because it carries both 2 AI and 2 AQ on the same board, it covers one measurement loop and one control loop from a single expansion, and the shared 14-bit resolution on both sides keeps input scaling and output trim consistent without mixing module classes. The 0.625ms cycle time across all channels is fast enough for closed-loop trim on machine-level analog signals rather than slow process monitoring only.
Applications
Typical use is adding a single 4-20mA sensor input and a 0-10V setpoint output to a compact S7-1200 station without expanding the rack footprint, for example on skid-mounted equipment, small process modules, or machine builder panels that need analog trim alongside the CPU's onboard digital I/O.
Specification
Full specification
General information 1
| Product type designation | SB 1233, AI 2x 14 bit/AQ 2x 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. | 25 mA |
|---|---|
| from backplane bus 5 V DC, typ. | 29 mA |
Show all 114 specifications ↓ Show less ↑108 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 | 6ES7233-4HD50-0XB0 |
|---|---|
| Type designation | SB 1233, AI 2x 14 bit/AQ 2x 14 bit |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4034106035938 |
| ETIM class | EC001420 |
| eCl@ss | 27242201 |
Power loss 1
| Power loss, typ. | 2 W |
|---|
Analog inputs 17
| Number of analog inputs | 2; 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 | 2; 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 | Differential |
|---|---|
| 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] | 16.6 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 3.51 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 13.3 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.257 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 3
| Width | 15 mm |
|---|---|
| Height | 62 mm |
| Depth | 63 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 | 0.044 kg |
|---|---|
| Package dimensions | 82 × 34 × 79 mm |
| Country of origin | DE |
| Shipping weight | 0.544 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7233-4HD50-0XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- UL approval
- cULus
- RCM (formerly C-TICK)
- KC approval
Quick answers
Questions about the SB 1233, AI 2x 14 bit/AQ 2x 14 bit
Which supply voltage is SB 1233, AI 2x 14 bit/AQ 2x 14 bit rated for?
The rated operational voltage of SB 1233, AI 2x 14 bit/AQ 2x 14 bit is 24 V DC.
What is the HS code of SB 1233, AI 2x 14 bit/AQ 2x 14 bit for customs?
The tariff (HS) code on file for SB 1233, AI 2x 14 bit/AQ 2x 14 bit is 85389091.
What is the EAN of SB 1233, AI 2x 14 bit/AQ 2x 14 bit?
The EAN (GTIN) of SB 1233, AI 2x 14 bit/AQ 2x 14 bit is 4034106035938.
Where does SB 1233, AI 2x 14 bit/AQ 2x 14 bit ship from, and how fast?
SB 1233, AI 2x 14 bit/AQ 2x 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.
Guides
Guides for PLC & controllers
What Is a Programmable Logic Controller and How Does It Work
Learn how a PLC works, including scan cycle, I/O sizing, IEC 61131-3 programming, and hardware selection for ABB, Schneider, and Siemens. Shop at Stoklink.
Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
Reviews
Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
