Schneider Electric TM221CE40T Programmable Logic Controller

Schneider Electric TM221CE40T is a Modicon M221 logic controller that packs 40 I/O into a compact 24 VDC package with transistor (PNP) outputs and built‑in Ethernet and serial communication. It provides 24 discrete inputs (including 4 fast IEC 61131-2 Type 1 inputs) and 16 transistor outputs at 24 V DC (0.5 A per channel), plus 2 analog inputs (0–10 V). The supply accepts 20.4–28.8 V DC with up to 35 A inrush and draws up to 17 W with maximum I/O expansion or 4.9 W without; it features a USB port and an Ethernet port, and a non‑isolated serial link (RJ45) supporting RS‑232/RS‑485 and Modbus RTU/ASCII, plus compatibility with Modicon TM3 expansion modules for scalable local, remote, or distributed I/O. A Run/Stop switch and cartridge extension aid commissioning, making this TM221CE40T well suited for compact automation tasks that require reliable 24 V I/O, network connectivity, and flexible expansion options.