Siemens 6ES7131-6BF00-0AA0 SIMATIC ET 200SP DI 8x24VDC BA Input Module

Overview

SIEMENS SIMATIC ET 200SP

6ES7131-6BF00-0AA0 SIMATIC ET 200SP DI 8x24VDC BA Input Module

An eight-input Basic module for 24 V DC PNP signals, with selectable filtering, a one-byte input image and module-level supply diagnostics.

At a Glance

Brand	Siemens
Model	6ES7131-6BF00-0AA0
Product Type	Basic digital input module
Core Function	Acquires binary sensor states
Application	ET 200SP stations using A0 BaseUnits

Basic process-data image

Eight channel states occupy one input byte.

Sensor wiring options

A0 bases provide one- and two-wire connections, with AUX bases for three-wire sensors.

Supply monitoring

PWR and DIAG indicators distinguish supply and module status.

Product Overview

6ES7131-6BF00-0AA0 provides eight P-reading inputs for the ET 200SP Basic configuration.

Its input characteristic accepts IEC 61131 types 1, 2 and 3, while selectable filtering and supply-voltage monitoring support straightforward sensor acquisition without counter or oversampling operation.

Ordering focus: Choose the Basic module for its one-byte process image and supply diagnostics, and select the A0 BaseUnit for the actual sensor wiring method.

Key Functions

Acquire the eight binary channels

Each channel contributes one bit to the one-byte input area.

Set the input filter for the sensor

The available filter settings range from no configured delay through 20 ms, with an additional cable-dependent delay.

Monitor the module supply

Supply-voltage diagnostics and the PWR/DIAG indicators are available, while wire-break and short-circuit diagnostic messages are not provided.

Official Specifications

Digital Input Circuit	8 P-reading channels; IEC 61131 types 1, 2 and 3
Module Supply Voltage	24 V DC nominal; 19.2–28.8 V DC
Module Current Consumption	8 mA rated without sensor supply; 70 mA maximum with all inputs supplied internally
Sensor-Supply Rating	24 V DC, 700 mA maximum, with short-circuit protection
Input Voltage Thresholds	Signal 0: −30 to +5 V; signal 1: +11 to +30 V
Typical Input Current at Signal 1	6.8 mA
Configurable Input Delay	None, 0.05, 0.1, 0.4, 0.8, 1.6, 3.2, 12.8 or 20 ms, plus 30–500 µs depending on cable length
Maximum Two-Wire Sensor Quiescent Current	2 mA
Input Address Space	1 byte
Typical Power Loss	1.6 W at 24 V with eight inputs supplied internally
Maximum Cable Length	1,000 m shielded; 600 m unshielded
Isolation Test Voltage	707 V DC
Channel Separation	No isolation between channels; isolation from the backplane bus
Status Indicators	Green PWR and channel LEDs; green/red DIAG LED
Overall Dimensions	15 × 73 × 58 mm (W × H × D)
Approximate Weight	28 g

Official source:Siemens DI 8x24VDC BA Data Sheet

Frequently Asked Questions

Can 6ES7131-6BF00-0AA0 take the place of a high-speed counter input module?

The Basic module supports digital-input operation but has no counter or oversampling mode.

Which BaseUnit should I choose for three-wire sensors on 6ES7131-6BF00-0AA0?

Use a BU type A0 with AUX terminals for the three-wire connection.

Can I connect four-wire sensors directly to 6ES7131-6BF00-0AA0 without extra terminals?

The four-wire connection uses a BU type A0 together with external terminals.

Will 6ES7131-6BF00-0AA0 report a broken sensor wire or short circuit as a diagnostic message?

The module provides supply-voltage monitoring but does not provide wire-break or short-circuit diagnostic messages.

How much PLC input memory does 6ES7131-6BF00-0AA0 consume?

The eight input states occupy one byte.

Which two-wire sensor leakage limit applies to 6ES7131-6BF00-0AA0?

The permissible quiescent current is 2 mA maximum.

Can I configure 6ES7131-6BF00-0AA0 in STEP 7 TIA Portal V13 SP1?

The module is configurable in STEP 7 TIA Portal from V13 SP1.

Compatibility & Ordering Notes

Before ordering 6ES7131-6BF00-0AA0: Use the Basic eight-channel module with the correct A0 sensor-wiring base, CC01 identification and a one-byte input allocation.

Compatibility Checklist for 6ES7131-6BF00-0AA0

• Match the Basic BF00 article and its firmware capability in the project.
• Use CC01 identification and a BU type A0 terminal base.
• Provide AUX terminals for three-wire sensors or external terminals for four-wire sensors.
• Do not assign counter, oversampling or channel-fault diagnostics to this Basic module.
• Keep two-wire sensor quiescent current within 2 mA.
• Size the internally supplied sensor load within the 700 mA limit.

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