Siemens 6ES7131-6BF01-0AA0 Digital Input Module

Siemens SIMATIC ET 200SP digital input module DI 8x24V DC BA (6ES7131-6BF01-0AA0) delivers eight 24 V DC digital inputs for the ET 200SP distributed I/O system, configured as sink inputs (PNP) in IEC 61131 Type 2 applications. Designed to snap into ET 200SP base units, BU-type A0, with Colour Code CC01, this module is packaged as a single piece and is intended to read binary on/off signals from field devices. The DI 8x24V DC BA supports a fast input sampling with an input delay time of 0.05 to 20 milliseconds, enabling responsive status updates to the PLC. It includes module diagnostics for the supply voltage, helping to quickly detect wiring or supply issues that could affect multiple channels. Use cases include connecting pushbuttons, limit switches, proximity sensors, and other 24 V DC sensors in automation and manufacturing environments, where reliable, isolated digital inputs must be read by the ET 200SP rack. With eight independent channels and backplane compatibility, this basic variant provides straightforward expansion of digital input capability for small to medium I/O configurations within the SIMATIC ET 200SP ecosystem.