Siemens 141-1BF30-0XA0 Digital Input Module S7

Siemens 6ES7141-1BF30-0XA0 EM 141 digital input expansion module for the SIMATIC ET 200X family provides eight 24 V DC digital input channels, enabling you to extend a PLC system’s sensing capability without adding a new CPU. Designed as an ET 200X expansion, it plugs into the backplane to collect signals from 24 V sensors such as switches, pushbuttons, and proximity devices and deliver them to the connected S7 controller for processing. The model is explicitly described as EM 141 with eight digital inputs (DI 8xDC24V), and its part number 6ES7141-1BF30-0XA0 confirms its role as a DI expansion card within the ET 200X family. This makes it a common choice for increasing input density on automation projects, including conveyors, packaging lines, and machine-control panels, where modular digital I/O is required to capture multiple sensor states in real time. Use within Siemens SIMATIC ecosystems typically involves integration with S7-300/ET 200X configurations, providing scalable, field-wall or cabinet-mounted I/O that supports reliable 24 V DC signal acquisition across built-out control architectures.