Schneider Electric TM218LDA24DRHN Modicon M218 Compact Logic Controller — 24 I/O, Relay Outputs, Ethernet, 100–240 VAC

The TM218LDA24DRHN from Schneider Electric belongs to the Modicon M218 compact logic controller series. This unit combines 14 digital inputs and 10 relay outputs in a single housing. It runs on 100–240 VAC supply and includes a built-in Ethernet RJ45 port. Engineers choose this model for small to medium machine control tasks that need reliable relay switching and Modbus TCP connectivity. The controller executes 1 Kinst per 2 ms under a typical boolean and arithmetic mix. It accepts up to seven TM2 expansion modules for a maximum of 248 I/O. Schneider Electric designed the Modicon M218 line for panel builders who value simple wiring and fast commissioning.

Summary

• The TM218LDA24DRHN delivers 24 onboard I/O with relay outputs rated at 2 A per point.
• Dual RS-485 ports and one Ethernet port cover Modbus RTU, ASCII, and Modbus TCP protocols.
• 1 MB Flash stores program and data backup, while 1 MB RAM handles application execution.
• Operating temperature spans 0 to +55 °C with IP20 protection for cabinet mounting.
• This Modicon M218 controller suits compact machines that need relay-based switching and network access.

Technical Specifications

• Brand: Schneider Electric
• Model: TM218LDA24DRHN
• Series: Modicon M218
• Product category: Compact logic controller
• Processor and clock speed: Manufacturer does not publish these values for this model.
• Program memory: 1 MB Flash for program and data backup.
• Data memory: 1 MB RAM for application execution.
• Programming software: SoMachine or EcoStruxure Machine Expert.
• Scan speed: 1 Kinst per 2 ms with 70% boolean and 30% arithmetic instructions, typical.
• Digital inputs: 14 total — 10 regular 24 Vdc inputs plus 4 fast HSC inputs at 10 kHz.
• Digital outputs: 10 relay outputs, 2 A per point.
• Analog inputs and outputs: None on this model.
• High-speed counters: 2 channels at 10 kHz.
• Pulse outputs: Not available.
• Expansion capacity: Up to 7 TM2 expansion modules, maximum 248 I/O.
• Built-in ports: 1× Ethernet RJ45, 2× RS-485 terminal block, 1× mini USB-B for programming.
• Protocols: Modbus TCP over Ethernet; Modbus RTU and ASCII over RS-485; proprietary programming protocol over USB.
• Communication expansion: One cartridge slot for TMCOM series modules covering Modbus, CANopen, or Profibus.
• Supply voltage: 100–240 VAC, 50/60 Hz.
• Power consumption: 25 W.
• Bus current: Not applicable — self-powered compact controller with no backplane bus.
• Operating temperature: 0 to +55 °C.
• Storage temperature: −25 to +70 °C.
• Relative humidity: 10–95%, non-condensing.
• Protection rating: IP20.
• Dimensions (H×W×D): 94.5 × 87.5 × 70 mm.
• Weight: 0.35 kg.
• Lifecycle status: Discontinued. Schneider Electric recommends the Modicon M221 as replacement. Last verified: 2026-09.

Installation Guide

• Mount the controller on a 35 mm DIN rail inside a cabinet that meets IP20 or better protection.
• Keep at least 50 mm clearance above and below the housing for natural convection cooling.
• Connect the 100–240 VAC supply to the dedicated terminals and verify the ground connection first.
• Wire 24 Vdc field devices to the 14 digital inputs and observe the polarity markings on the terminal block.
• Size relay output loads within 2 A per point and add external flyback diodes for inductive loads.
• Use shielded twisted-pair cable for the RS-485 ports and terminate the bus at both ends.
• Connect the Ethernet RJ45 port to a switched network and assign a fixed IP address for Modbus TCP.
• Insert the TMCOM cartridge before powering the unit if you need CANopen, Profibus, or extra Modbus ports.
• Download the application through the mini USB-B port using EcoStruxure Machine Expert.
• Verify input and output behavior with the built-in status LEDs before running the machine.

Packing List

• 1× Schneider Electric TM218LDA24DRHN Modicon M218 compact logic controller
• 1× terminal block set for power, inputs, and outputs
• 1× quick start guide from the manufacturer
• 1× protective carton with anti-static bag

Shipping

• We ship worldwide through FedEx, UPS, and DHL.
• Orders placed before 15:00 China time leave the warehouse the same business day.
• Each parcel includes tracking information and careful anti-static packaging.
• Delivery normally takes 3–7 business days depending on destination and customs clearance.

FAQ

• Q: Does the TM218LDA24DRHN include analog I/O?
  A: No. This model provides digital I/O only. Add TM2 expansion modules if you need analog channels.
• Q: Can I program this controller with EcoStruxure Machine Expert?
  A: Yes. Both SoMachine and EcoStruxure Machine Expert support the Modicon M218 series.
• Q: How many expansion modules does the controller accept?
  A: It accepts up to seven TM2 modules, reaching a maximum of 248 I/O points.
• Q: What replacement does Schneider Electric recommend?
  A: Schneider Electric lists the Modicon M221 as the replacement for this discontinued model.
• Q: Which communication protocols does the built-in Ethernet port support?
  A: The Ethernet port supports Modbus TCP for controller-to-controller and SCADA communication.
• Q: What is the relay output rating per point?
  A: Each relay output handles 2 A, which covers most contactor coils and small solenoid loads.

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