TM221CE40R Modicon M221 40 I/O Relay Ethernet Logic Controller | Schneider Electric

The Original New Schneider Electric TM221CE40R Modicon M221 Logic Controller is a compact, high-performance programmable logic controller (PLC) designed for basic to advanced machine control applications. Part of the Modicon M221 range, this nano PLC provides 40 discrete I/O points (24 inputs and 16 relay outputs) and integrates Ethernet, USB, and serial communication ports. Featuring a built‑in 256 KB memory and supporting up to 7 local or 14 remote TM3 expansion I/O modules, the TM221CE40R offers a scalable solution for industrial automation systems. Configured via the free SoMachine Basic software, it delivers benchmark performance while reducing installation costs.

Core Engineering Highlights:
40 discrete I/O points (24 inputs / 16 relay outputs) | 100‑240V AC power supply | 10‑bit analog input resolution | 256 KB memory (application + data) | Ethernet (Modbus TCP) + USB + RS232/RS485 | Up to 7 local / 14 remote TM3 expansion modules | SD card slot up to 2 GB | Run/Stop switch | IP20 | 0.456 kg | 160 x 90 x 70 mm | EN/IEC 61131‑2 compliant

Key Features:

• Original New Schneider Electric TM221CE40R controller

• 24 discrete inputs (24V DC, sink/source configurable) with 10‑bit analog input resolution

• 16 relay outputs (normally open, 2A per channel)

• Integrated Ethernet port supporting Modbus TCP and Ethernet/IP protocols

• USB mini‑B port for programming and diagnostics

• Non‑isolated serial link (RS232/RS485) via RJ45 connector

• SD card slot (up to 2 GB) for application backup and data logging

• Built‑in Run/Stop switch for direct manual control

• Supports up to 7 local I/O expansion modules or 14 remote I/O modules via TM3 bus

• 256 KB RAM for user application and data, 256 KB built‑in flash memory

• DIN rail mounting for space‑efficient installation

• IP20 protection for control cabinet environments

• CE, cULus, CSA, RCM, EAC, ABS, LR, DNV‑GL certified

• Achieves EN/IEC 61131‑2, EN/IEC 61010‑2‑201 standards

Applications:

• Small to medium machine automation and OEM control systems

• Conveyor and material handling equipment

• Packaging machinery and assembly lines

• Pump, fan, and HVAC control

• Building automation and lighting control

• Remote and distributed I/O configurations with Modicon TM3 expansion modules

Technical Specifications:

System Compatibility:

• Schneider Electric Modicon M221 logic controllers

• Modicon TM3 expansion I/O modules (digital, analog, temperature, safety)

• TM3 bus coupler for remote I/O architectures

• SoMachine Basic / EcoStruxure Machine Expert Basic software (free download)

• Ethernet/IP and Modbus TCP networks

• RS232/RS485 serial communication

Related Products:

• TM221CE24R – 24 I/O relay version with Ethernet

• TM221C40R – 40 I/O relay version without Ethernet

• TM3DI16 – 16‑input digital expansion module

• TM3DQ16R – 16‑output relay expansion module

• TM3AI8 – 8‑channel analog input module

• TM3AQ4 – 4‑channel analog output module

• TM3TI4 – 4‑channel temperature input module

• TM3BUS – TM3 bus coupler for remote I/O

• SoMachine Basic – Free programming software download

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Schneider Electric, Modicon, and EcoStruxure are trademarks of Schneider Electric SE.