Schneider Electric TM221ME16R Programmable Logic Controller

Schneider Electric's TM221ME16R is the screw-terminal version of the Modicon M221 logic controller, delivering 16 digital I/O on a single module: 8 programmable inputs and 8 relay outputs. It includes an integrated Ethernet port for programming and network communication, enabling direct connection to Schneider Electric software workflows and basic SCADA integration. The module carries 256 KB of memory to hold control logic and data for compact automation tasks, and it is part of the Modicon M221 family, designed for small-scale control with quick setup and straightforward debugging. This 16 I/O relay variant is commonly deployed for simple machine control, sequencing, and basic automation in compact panels where space and cost are at a premium; the 8 DI and 8 DO (relay) configuration supports straightforward input sensing and actuation using relay outputs. The TM221ME16R is the screw-terminal variant of the TM221 family; for spring-terminal connections the TM221ME16RG offers a closely related option.