Siemens 6EQ1131-1AF00-0BA0 Digital Input Module

Siemens 6EQ1131-1AF00-0BA0 is a digital input module designed for the Criterion 900i-RGI system, serving as the field-side interface that captures discrete signals from sensors and switches and feeds them into the Criterion control environment. The part is associated with the Criterion 900 family and lists cross references including 13935-12 and 1391912, with AE appearing in related documentation. In practical terms, this input module enables monitoring of on/off or open/closed conditions in industrial automation, supporting applications such as machine safety interlocks, proximity sensor networks, and conveyor sensing by delivering reliable digital signals to the control logic. It is typically sourced for repair or replacement within established Criterion 900 installations that require a matching RGI input block, making it a compatibility-focused option for legacy Criterion I/O configurations.