Overview
The Siemens SIMATIC S7-1200 SM 1231 Analog Input Module (6ES7231-5ND32-0XB0) is designed to expand the analog input capabilities of SIMATIC S7-1200 PLCs. With 4 high-resolution analog input channels, this module supports a wide range of voltage and current signals, making it ideal for accurate signal acquisition in industrial automation, process control, and machine applications.
Its compact design ensures seamless integration into existing control cabinets while maintaining Siemens’ renowned reliability and performance.
Benefit
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High Precision: 15-bit resolution ensures accurate data acquisition for sensitive industrial processes.
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Versatile Interfacing: Easily switch between voltage and current modes without needing multiple specialized modules.
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Compact Design: Seamlessly fits onto the right side of any S7-1200 CPU, saving valuable cabinet space.
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Industrial Reliability: Built to Siemens’ rigorous standards for long-term durability in harsh environments.
Function & Features
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4 Analog Input Channels (AI)
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Supported Voltage Ranges:
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±10 V
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±5 V
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±2.5 V
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±1.25 V
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Supported Current Ranges:
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0–20 mA
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4–20 mA
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Resolution: 15 bit + sign bit
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High measurement accuracy and stability
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Designed for SIMATIC S7-1200 automation systems
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Easy configuration using Siemens TIA Portal
Technical Specification
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Product Number: 6ES7231-5ND32-0XB0
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Series: SIMATIC S7-1200
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Module Type: SM 1231
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Analog Inputs: 4 AI
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Signal Types: Voltage & Current
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Resolution: 15 bit + sign bit
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