Siemens SIMATIC S7 6ES7131-4BF00-0AA0 Digital Input Electronic Module

Product Overview

The Siemens 6ES7131-4BF00-0AA0 is a digital input electronic module for the SIMATIC ET 200S distributed I/O system. It provides 8 digital inputs (DI) at 24V DC with standard functionality, enabling reliable acquisition of switch and sensor signals in decentralized automation architectures. Designed for seamless integration with ET 200S terminal modules, it supports high-density I/O configurations in compact control cabinets.

Key Specifications

• Module Type: Digital Input (DI)
• Number of Inputs: 8 channels
• Rated Input Voltage: 24V DC
• Input Characteristic: Type 3 per IEC 61131
• Input Delay: Parameterizable (0.05 ms to 20 ms)
• Isolation: Yes, between channels and backplane
• Power Loss: Typ. 0.7 W
• Dimensions (W × H × D): 15 mm × 81 mm × 52 mm
• Weight: 35 g
• Terminal Module: Requires TM-E terminal module (ordered separately)

Compatibility & Applications

Compatible with all ET 200S interface modules (IM151-1/3/7/8) and terminal modules TM-E15S24-A1 or TM-E15S26-A1. Ideal for conveyor limit switch monitoring, pushbutton panels, proximity sensor input, safety interlock status, and general 24V DC digital signal acquisition in manufacturing, packaging, and material handling systems.

FAQ

• Q: What terminal module is required? A: Use TM-E15S24-A1 or TM-E15S26-A1 terminal modules. The module snaps into the terminal module for quick, tool-free connection.
• Q: Can inputs be used for interrupt processing? A: Yes, the module supports hardware interrupt triggering on rising/falling edges for time-critical applications.
• Q: What is the maximum cable length? A: Up to 600 m for unshielded cables and 1,000 m for shielded cables at typical input delay settings.
• Q: Is this module hot-swappable? A: Yes, ET 200S electronic modules support hot-swapping when the terminal module remains wired and the backplane is active.

Installation Guide

1. Mount the ET 200S terminal module (TM-E) on the DIN rail.
2. Wire field devices to the terminal module screw or spring-clamp terminals.
3. Insert 6ES7131-4BF00-0AA0 into the terminal module until it clicks into place.
4. Configure input delay and interrupt parameters in STEP 7 or TIA Portal.
5. Verify input status LEDs illuminate when field devices are activated.

Selection Tips

• Use 6ES7131-4BF00-0AA0 for standard 8-channel digital input applications in ET 200S systems.
• For high-speed counting, use TM Count modules (6ES7138-6AA00-0BA0) instead of standard DI modules.
• For safety-rated inputs, select fail-safe DI modules from the ET 200S safety portfolio.
• Always order terminal modules separately; one terminal module can be reused when swapping electronic modules.