Siemens 6ES7 131-4BB00-0AB0 is a digital input module for the SIMATIC ET 200S distributed I/O system featuring 2 DC 24 V digital inputs (2 DI DC24V) in a High Feature variant with diagnostics. It converts field signals from switches and sensors into PLC input data and provides channel‑level diagnostics for fault and status reporting. This 2‑channel, 24 V DC input module is used in machine control and automation to monitor local devices with reliable diagnostic capability, and is identified by the 6ES7131-4BB00-0AB0 family number.
