Siemens 6ES7131-4EB00-0AB0 Digital Input Module

Siemens 6ES7131-4EB00-0AB0 is a two-channel digital input module for the SIMATIC ET 200S distributed I/O system, specifically the 2DI AC120V ST variant, that accepts 120 V AC field signals. This module is 15 mm wide and provides two digital inputs, DI0 and DI1, with the sensor power supplied on L1 and the neutral on N; it is designed to be wired as part of ET 200S DP installations and to interface with DP networks. As part of the ET 200S family, the 6ES7131-4EB00-0AB0 is one of five digital modules in the DP series, intended for monitoring and converting 120 VAC signals from field devices in distributed automation installations. The 2DI AC120V ST variant is documented in Siemens ET 200S manuals and data sheets, including terminal assignments that show how DI0 and DI1 are wired and how L1 and N supply the sensor power, helping ensure safe, consistent wiring in control cabinets.