Siemens 6ES5464-8MF21 Digital Input Output Module

Siemens 6ES5464-8MF21 is a two-channel analog input module for the SIMATIC S5 family, designed for use with S5-90U/95U/100U controllers and ET 100U or ET 200U racks. It provides two Pt100 temperature-sensor inputs with linearization, enabling direct RTD measurement in industrial automation. The module features floating galvanic isolation between the analog inputs and the backplane, helping to protect the controller and reduce interference. This device is intended for temperature monitoring and process control tasks within legacy S5 installations that rely on Pt100 RTD sensing, and it relies on the SIMATIC S5 analog input topology supported by ET 100U/ET 200U expansions. The 6ES5464-8MF21 is identified by Siemens part number 6ES5464-8MF21 and serves as the analog input solution for S5-464 modules in such systems.