Name: Siemens 6ES7131-4BF00-0AA0 Digital Input Electronic Module
Brand: Siemens
SKU: 22713
Availability: InStock
Rating: 5.0 (1 reviews)

Introduction

The Siemens 6ES7131-4BF00-0AA0 Digital Input Electronic Module is designed for digital signal acquisition in SIMATIC ET 200S distributed automation systems. It enables a PLC to receive binary signals from field devices and use them for machine sequencing, equipment monitoring, and industrial process control.

The module provides eight 24 V DC digital inputs in a compact 15 mm-wide housing. Its IEC 61131 Type 1 input characteristics support compatible industrial sensors and switching devices, while individual green status LEDs help technicians identify input states during commissioning and troubleshooting.

With a fixed input delay of 2 to 4.5 ms, the module is suitable for standard digital signal monitoring rather than applications requiring configurable input filtering or dedicated diagnostic functions. Its electrical isolation from the backplane bus supports integration into the modular ET 200S architecture.

The 6ES7131-4BF00-0AA0 is listed by Siemens as a spare-part product, making exact part-number verification important for legacy equipment maintenance. Before ordering a replacement, confirm the terminal module, wiring assignments, and compatibility with the existing distributed I/O station.

Technical Specifications

Parameter	Specification
Brand	Siemens
Model	6ES7131-4BF00-0AA0
Product Type	Digital Input Electronic Module
Product Family	SIMATIC ET 200S
Module Designation	8DI DC 24V
Number of Digital Inputs	8
Rated Input Voltage	24 V DC
Signal 0 Input Voltage	−30 to +5 V
Signal 1 Input Voltage	+15 to +30 V
Typical Input Current at Logic 1	5 mA
Input Characteristic	IEC 61131 Type 1
Configurable Input Delay	No
Input Delay, 0 to 1	2–4.5 ms
Input Delay, 1 to 0	2–4.5 ms
Two-Wire Sensor Support	Yes
Maximum Sensor Quiescent Current	1.5 mA
Diagnostic Function	No
Input Status Indicators	Green LED per channel
Channel-to-Channel Isolation	No
Isolation from Backplane Bus	Yes
Typical Power Dissipation	1.2 W
Maximum Shielded Cable Length	1,000 m
Maximum Unshielded Cable Length	600 m
Module Width	15 mm
Dimensions (W × H × D)	15 × 81 × 52 mm
Dimensions (inches)	0.59 × 3.19 × 2.05 in
Weight (provided specification)	0.042 kg
Weight (provided specification, lb)	0.09 lb
Installation	Compatible SIMATIC ET 200S terminal module required
Product Lifecycle	Product cancellation; listed as a spare part

Note: Dimensions and weight above follow the supplied product information. Siemens technical data lists the electronic module itself at approximately 35 g. The supplied weight of 0.042 kg may reflect a different weighing or packaging basis, so confirm the applicable weight when preparing shipping documentation.

Recommended Related Models

The following Siemens modules may be relevant to SIMATIC ET 200S maintenance and distributed I/O expansion. Verify channel count, electrical characteristics, and terminal module compatibility before selecting an alternative.

Model	Product Type	Typical Function
6ES7131-4BF00-0AA0	Digital Input Module	8-channel, 24 V DC digital input
6ES7131-4BD01-0AA0	Digital Input Module	4-channel standard digital input
6ES7131-4BD01-0AB0	Digital Input Module	4-channel high-feature digital input
6ES7131-4BB01-0AA0	Digital Input Module	2-channel, 24 V DC digital input
6ES7132-4BB01-0AB0	Digital Output Module	Digital output control
6ES7193-4CA50-0AA0	Terminal Module	ET 200S connection and wiring

Popular Related Models

These additional Siemens automation components may be relevant to distributed I/O systems, sensor signal acquisition, and PLC-controlled equipment.

Model	Product Category	Application
6ES7131-4BF00-0AA0	Digital Input Module	Eight-channel discrete signal acquisition
6ES7132-4BB01-0AB0	Digital Output Module	Digital actuator control
6ES7134-4JB01-0AB0	Analog Input Module	Analog sensor signal acquisition
6ES7135-4GB01-0AB0	Analog Output Module	Analog control signal output
6ES7138-4CA01-0AA0	Power Module	ET 200S station power management
6ES7193-4CB20-0AA0	Terminal Module	Distributed I/O connection and wiring

Ordering recommendation: Confirm the full Siemens catalog number, product condition, terminal module requirements, and compatibility with the existing SIMATIC ET 200S station. For legacy installations, also verify spare-part availability and ensure the standard input module meets the application's diagnostic and response-time requirements.

Applications

The Siemens 6ES7131-4BF00-0AA0 is a digital input electronic module for the SIMATIC ET 200S distributed I/O system. It provides eight 24 V DC digital input channels for acquiring binary signals from industrial sensors, switches, and other field devices. The collected signals are transferred through the ET 200S backplane bus to the higher-level automation controller.

Typical applications include:

Industrial machine control: Monitoring push buttons, limit switches, and proximity sensors.
Production line automation: Detecting workpiece presence, machine position, and equipment status.
PLC-based control systems: Collecting discrete input signals for sequence control and logic processing.
Equipment monitoring: Tracking the operating states of motors, actuators, and auxiliary devices through compatible sensors.
Distributed I/O expansion: Adding eight digital input channels to an existing SIMATIC ET 200S station.
Industrial maintenance: Replacing an existing module with the same part number to restore signal acquisition.

With eight inputs in a compact module, the 6ES7131-4BF00-0AA0 is suitable for installations that require multiple digital signals without occupying excessive cabinet space.

Advantages

Eight digital input channels: Supports the acquisition of multiple binary signals within a single module.
24 V DC input operation: Designed for common industrial control signals.
Compact 15 mm width: Helps optimize space in modular distributed I/O assemblies.
Individual input status LEDs: Green indicators allow technicians to check the state of each digital input.
IEC 61131 Type 1 input characteristics: Supports compatible industrial field devices, including suitable two-wire sensors.
Electrical isolation: Provides isolation between the digital inputs and the backplane bus.
Fixed input response: Offers a typical input delay of approximately 3 ms, with a specified range of 2 to 4.5 ms.
Modular installation: Integrates into compatible SIMATIC ET 200S stations through an appropriate terminal module.
Suitable for established systems: Can be used for maintenance and spare-part replacement where the original hardware configuration is retained.

Technical FAQs

Q1: What is the Siemens 6ES7131-4BF00-0AA0?

It is a SIMATIC ET 200S digital input electronic module with eight 24 V DC digital input channels.

Q2: How many digital inputs does this module provide?

The module provides eight digital inputs for acquiring binary signals from compatible field devices.

Q3: What is the rated input voltage?

The rated input voltage is 24 V DC. The specified input range is −30 to +5 V for logic 0 and +15 to +30 V for logic 1.

Q4: What is the typical input current?

The typical input current at logic 1 is 5 mA per channel.

Q5: Can the input delay be configured?

No. The standard input delay is not parameterizable. The specified delay is 2 to 4.5 ms for both low-to-high and high-to-low transitions.

Q6: Does the module support two-wire sensors?

Yes. Compatible two-wire sensors can be connected when their electrical characteristics meet the module requirements. The maximum permissible quiescent current is 1.5 mA.

Q7: Does the module provide dedicated diagnostic functions?

No. This standard module does not provide a dedicated diagnostic function. Individual green LEDs indicate the digital input states.

Q8: Are the input channels electrically isolated from one another?

No. The eight input channels are not electrically isolated from each other. The digital input circuitry is isolated from the backplane bus.

Q9: What cable lengths are supported?

The specified maximum cable length is 1,000 m for shielded cables and 600 m for unshielded cables. Actual installation conditions and applicable wiring requirements should also be considered.

Q10: Is the 6ES7131-4BF00-0AA0 still available as a current-production product?

Siemens lists this model as a spare part with a product cancellation lifecycle status. Availability may depend on remaining inventory and spare-parts channels. Verify the exact part number and system compatibility before purchasing.

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