Siemens SM 1231 AI 4x13bit Analog Input Module 6ES7231-5ND32-0XB0

6ES7231-5ND32-0XB0 Overview

The 6ES7231-5ND32-0XB0 is the SM 1231 analog input module with 4 inputs at 13-bit resolution for the Siemens SIMATIC S7-1200 platform. It accepts the standard process signals - voltage ranges such as 0 to 10 V and current loops such as 0/4 to 20 mA - that the vast majority of industrial transmitters deliver, feeding pressure, flow, level and position values into the controller's program. Configuration takes place in TIA Portal together with the CPU, where input types, ranges and diagnostics are defined. Four channels in a narrow signal-module footprint make it the workhorse choice when a machine needs a handful of analog measurements, and its membership of the widely installed S7-1200 ecosystem makes it a routine service replacement item as well.

Why Choose Siemens Automation Platforms?

• Standard process signal inputs: 4 inputs for common voltage and current signals cover most industrial transmitters.
• 13-bit resolution: Resolution per datasheet suits typical control-loop accuracy needs.
• TIA Portal integration: Module configuration shares the CPU's engineering environment.
• Ecosystem spare part: Broad installed base of S7-1200 systems keeps demand for this module steady.

Technical Specifications

Typical Applications

• Pressure and flow acquisition: Analog inputs for process transmitters in machine control.
• Level and position feedback: Standard signals from level probes and position sensors.
• Small plant control: Compact analog measurement set for S7-1200 applications.
• Service replacement: Replacement module for failed channels on installed S7-1200 systems.

Quality Assurance and Support

• ✓ Genuine Siemens module - authenticity verified per item label
• ✓ In stock - current availability and condition details available on request
• ✓ Professional technical support - engineering team with 15+ years in industrial automation systems
• ✓ Tested before shipping - every module is electrically inspected prior to dispatch
• ✓ Fast dispatch - ships within 1-3 business days from Hong Kong warehouse
• ✓ Warranty - 90 days warranty, 30-day returns for unused items

Packing and Shipping

The 6ES7231-5ND32-0XB0 module ships in anti-static protective packaging with cushioning material and a rigid outer carton to prevent transit damage. Worldwide delivery via DHL, FedEx, UPS, EMS and TNT, typically within 1-3 working days after payment confirmation, with tracking information provided for every shipment.