Siemens 6ES7131-4BB01-0AB0 Digital Input Module

The Siemens 6ES7131-4BB01-0AB0 Digital Input Module is a two-channel 24 VDC digital input module for SIMATIC ET 200S distributed I/O systems, designed to acquire signals from switches, proximity sensors, and other field devices. It provides two digital inputs, 24 VDC input voltage, and a typical input current of 8 mA at a logic level “1,” with a parameterizable input delay of 0.1 ms, 0.5 ms, 3 ms, or 15 ms. Diagnostics include encoder short-circuit diagnostics with an SF LED, and it features reverse polarity and electronic short‑circuit protection with a compact 15 mm module width that mounts on the ET 200S backplane with a compatible terminal module. It is designed for remote digital input acquisition in industrial automation applications, including factory automation, manufacturing lines, conveyor systems, packaging machinery, and process control within Siemens SIMATIC ET 200S distributed I/O installations.