Siemens AG 6ES5 431-8MA11 Digital Input Module

Siemens 6ES5 431-8MA11 Digital Input Module is an eight‑channel 24 V DC digital input module designed for the ET 200U DP Standard I/O system in the SIMATIC S5 family. It provides eight digital input circuits that monitor field devices such as sensors, pushbuttons, and limit switches, feeding the ET 200U back to the central controller for real‑time control and sequencing. The module uses a 1‑byte addressing scheme on the DP Standard bus and delivers an input response delay of 4 to 5.5 ms. Typical current consumption is 32 mA, with about 2 W of power loss during normal operation. Cataloged under order number 431‑8MA11, this 8DI module is designed for distributed digital input tasks within industrial automation environments, facilitating scalable I/O expansion for SIMATIC S5 projects and providing reliable signal acquisition for control logic, monitoring, and basic safety interlocks across manufacturing lines.