Schneider Electric TM251MESE Logic Controller

Schneider Electric TM251MESE is a Modicon M251 logic controller designed for compact machine automation, delivering dual Ethernet networks through a built-in dual-port Ethernet switch to separate control and device-network traffic. It provides two Ethernet ports (Ethernet 1 and Ethernet 2, with Ethernet 2 geared toward device-network connections), plus a serial line port and a USB mini-B programming port for field configuration and debugging. Memory-wise, the unit offers 8 MB of program memory, 64 MB of RAM, and 128 MB of built-in flash for backing up user programs, along with an SD card slot that supports cards up to 32 GB for data storage and project files. The TM251MESE operates on 24 V DC power, aligning with typical industrial cabinet supplies. This controller suits small- to mid-size automation tasks where reliable Ethernet connectivity and local programming are needed, such as standalone machine control or distributed control nodes within a Schneider Electric automation ecosystem.