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Siemens SIPLUS S7-1200 SM 1231 Analog Input Module

Siemens SIPLUS S7-1200 SM 1231 8AI Analog Input Module.

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ManufacturerSiemens

Part number6AG1231-4HF32-4XB0

Inputs 8 AI

Resolution 12 bit

Voltage +/-10 V, +/-5 V, +/-2.5 V

Current 0-20 mA, 4-20 mA

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Veteran-owned

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8 Analog Inputs Selectable Voltage/Current 12-bit Resolution Conformal Coating Extended Temperature Range (-20 to +60°C) SIPLUS Protection

Product description

The Siemens SIPLUS S7-1200 SM 1231 (6AG1231-4HF32-4XB0) is an analog input signal module designed for the S7-1200 PLC system. It is based on the 6ES7231-4HF32-0XB0 and features conformal coating for enhanced environmental protection. This module offers 8 analog inputs with selectable voltage ranges (+/-10 V, +/-5 V, +/-2.5 V) and current ranges (0-20 mA, 4-20 mA). It boasts a 12-bit analog-to-digital converter (ADC) resolution, providing precise measurements.

With its extended operating temperature range of -20 to +60 °C and conformal coating, this module is suitable for harsh industrial environments found in chemical processing, food and beverage production, and outdoor automation applications. It is ideal for applications requiring precise monitoring of analog signals such as temperature, pressure, and flow rates.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 6AG1231-4HF32-4XB0. Secure reliable components for your automation projects and maintain operational continuity with our quality surplus inventory.

Technical specifications

Inputs	8 AI
Resolution	12 bit
Voltage	+/-10 V, +/-5 V, +/-2.5 V
Current	0-20 mA, 4-20 mA
Temp Range	-20 to +60 °C
Conformal Coating	Yes
Based on	6ES7231-4HF32-0XB0

Common applications

Process Control

Temperature Monitoring

Pressure Sensing

Flow Rate Measurement

Chemical Industry

Food & Beverage Automation

Harsh Environments

Compatible systems

Siemens S7-1200 PLC Series (e.g., CPU 1214C, 1215C, 1217C)

Also known as

SIPLUS S7-1200 SM 1231 Siemens Analog Input Module 8AI SM 1231

Replaces / compatible with

This SIPLUS module is an enhanced version of the standard Siemens SM 1231 (6ES7231-4HF32-0XB0) with added environmental protection. It is directly interchangeable with the base model in compatible S7-1200 systems.

Technical note

Expert tip

The conformal coating on the 6AG1231-4HF32-4XB0 provides protection against moisture and corrosive atmospheres, making it suitable for demanding applications beyond standard industrial environments.

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Frequently asked questions

What are the input signal types and resolution for the Siemens 6AG1231-4HF32-4XB0?

The Siemens SIPLUS S7-1200 SM 1231 (6AG1231-4HF32-4XB0) offers 8 analog inputs that can be configured for voltage (+/-10 V, +/-5 V, +/-2.5 V) or current (0-20 mA, 4-20 mA). It provides a 12-bit resolution for precise signal acquisition.