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    • SIEMENS 6ES7131-4BD01-0AA0 ET 200S Digital Input Module

      Product Overview

      The SIEMENS 6ES7131-4BD01-0AA0 is a SIMATIC ET 200S Digital Input Module designed for distributed I/O applications. It provides reliable acquisition of digital signals from sensors, switches, and field devices and transmits the signals to the PLC control system through the ET 200S interface.

      This module features 4 digital inputs, 24 V DC, and a compact 15 mm width design, making it suitable for space-saving industrial automation installations.

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      Technical Specifications

      • Brand: SIEMENS
      • Model: 6ES7131-4BD01-0AA0
      • Series: SIMATIC ET 200S
      • Type: Digital Input Module (DI Module)
      • Input Channels: 4 Digital Inputs
      • Input Voltage: 24 V DC
      • Input Type: DC digital input, IEC 61131 Type 1
      • Input Current: Approx. 7 mA at 24 V DC
      • Input Delay: Approx. 2–4.5 ms
      • Power Supply: 24 V DC from power module
      • Address Space: 1 byte (4 bits when packed)
      • Status Indicator: Green LED per channel
      • Protection: Reverse polarity protection
      • Installation Width: 15 mm
      • Dimensions: 15 × 81 × 52 mm
      • Weight: Approx. 35 g
      • Communication System: PROFIBUS DP via ET 200S station

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      Advantages & Features

      • Original Siemens SIMATIC industrial I/O module
      • Reliable 24 V DC digital signal acquisition
      • Compact design saves control cabinet space
      • Fast and stable signal processing
      • Easy integration with ET 200S distributed I/O systems
      • LED indicators simplify troubleshooting and maintenance
      • High reliability for continuous industrial operation
      • Suitable for machine automation and process control applications

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      Applications

      • Factory automation systems
      • Siemens S7 PLC control systems
      • Machine manufacturing equipment
      • Conveyor and material handling systems
      • Packaging machinery
      • Production line monitoring
      • Industrial sensor signal collection
      • Distributed remote I/O applications

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      Precautions

      • Confirm compatibility with ET 200S interface module before installation
      • Check 24 V DC power supply polarity carefully
      • Disconnect power before replacing the module
      • Ensure correct terminal wiring
      • Avoid strong vibration, moisture, and dust environments
      • Check PLC hardware configuration after replacement 

.The structure and details of the product：

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