Siemens AG 6ES5 464-8MC11 Analog Input Module

The Siemens 6ES5 464-8MC11 is a four‑channel analog input module for the SIMATIC S5 family, designed for use in ET 100U distributed I/O configurations to bring analog voltages into the PLC. Each of the four inputs accepts voltages in the ±10 V range, enabling direct connection to common sensors and transducers without external conditioning for many standard applications. The module plugs into the S5 backplane, integrating with the CPU to provide the measured voltages as data words that can be scaled and used in control logic or monitoring routines. This part number is specifically identified as an Analog Input Module with 4 x ±10 V inputs, making it suitable for legacy SIMATIC S5 installations that require replacement or repair of aging hardware. When planning an upgrade or repair, verify bus compatibility, backplane occupancy, and firmware constraints to ensure reliable operation within the existing control system.