Schneider Electric TM221C40R Logic Controller

Schneider Electric TM221C40R is a compact Modicon M221 logic controller with 40 I/O (24 digital inputs and 16 relay outputs) designed for small automation tasks. It supports Modbus RTU/ASCII communications and is powered from a universal 100–240 VAC supply, with field wiring via removable screw-terminal blocks for fast, secure connections. The TM221C40R can integrate with local and distributed I/O configurations through Modicon TM3, enabling scalable architectures from a single cabinet to multi‑panel installations. With 40 I/O in a compact form factor and dedicated relay outputs, it is well suited for basic machine control, sequencing, interlock logic, and straightforward process control in small packaging lines, conveyors, or standalone equipment where Modbus connectivity and reliable digital I/O are required. The TM221 family is part of Schneider Electric's Modicon line, providing a cost‑effective solution for automation projects that need dependable I/O and simple integration with SCADA or HMI systems.