Schneider Electric TM221ME16T Programmable Logic Controller

Schneider Electric's TM221ME16T is a Modicon M221 programmable logic controller that provides 16 I/O points, comprised of 8 digital inputs and 8 transistor outputs (PNP). Equipped with Ethernet connectivity, it enables straightforward PLC networking within compact automation layouts. The screw-terminal variant supports easy field wiring and can be expanded with TM3 I/O modules for local, remote, or distributed configurations, expanding system reach as needed. The unit includes 256 kB of user RAM and data RAM, plus 256 kB of built-in flash memory and an onboard 2 GB SD card for program data and logging. It runs EcoStruxure Machine Expert Basic software (formerly SoMachine), offering a familiar development environment for ladder logic and structured text. Designed for machine builders seeking a compact, scalable control solution, TM221ME16T supports local I/O expansion while maintaining a small footprint and straightforward commissioning, making it suitable for small packaging lines, simple conveyors, and other compact automation tasks that require reliable, transistor-based outputs and Ethernet connectivity.