Schneider Electric TM221ME16R Programmable Logic Controller

Schneider Electric's TM221ME16R is a compact Modicon M221 programmable logic controller that delivers 16 I/O points—8 digital inputs and 8 relay-driven outputs—in a single unit designed for small-scale machine control. The screw-terminal version includes an Ethernet port for local networking and programming, and it provides about 256 KB of memory to store the ladder logic, variables, and runtime data used by typical control applications. This TM221ME16R configuration is part of the Modicon M221 family and is described as 16 I/O, with 8 DI and 8 DO with relay outputs; a spring-terminal version, TM221ME16RG, is also available for alternative wiring preferences. Together, the integrated I/O, Ethernet connectivity, and modest on-board memory make the TM221ME16R a suitable choice when reliable, compact PLC control is required in small automation applications.