TM218LDA40DR4PHN | Schneider Electric 40 I/O Logic Controller

Product Overview: TM218LDA40DR4PHN Compact Logic Controller

When a mid-sized packaging line needed 40 I/O points, analog signal conditioning, and network connectivity without a full backplane-based rack system, the engineering team faced a familiar constraint: panel space was fixed, but the control requirement was not. The Schneider Electric TM218LDA40DR4PHN Modicon M218 compact logic controller addresses exactly this scenario. It integrates 24 digital inputs, 16 relay outputs, 2 analog inputs, and 2 analog outputs into a single self-powered unit measuring 94.5 × 150 × 70 mm. Because it requires no backplane bus, wiring and commissioning remain straightforward for standalone machine control.

Key Features and Verified Specifications

The TM218LDA40DR4PHN is engineered for precise, repeatable machine control. Its 1 MB Flash program memory and 1 MB RAM data memory support application execution with a typical scan speed of 1 Kinst per 2 ms. The 24 Vdc digital inputs include four fast high-speed counter channels rated at 10 kHz, while the 16 relay outputs handle 2 A per point, with four fast PTO/PWM outputs available. Two analog inputs and two analog outputs operate on a 0-10 Vdc range. For communication, the controller provides one Ethernet RJ45 port, one CANopen SUB-D9 port, two RS-485 terminal blocks, and one mini USB-B programming port. A communication cartridge slot accepts TMCOM series modules for optional Modbus, CANopen, or Profibus expansion.

Technical Specifications

• Supply voltage: 100...240 V AC (50/60 Hz)
• Power consumption: 34 W
• Digital inputs: 24 (20 regular 24 Vdc + 4 fast HSC 10 kHz)
• Digital outputs: 16 relay, 2 A per point; 4 fast PTO/PWM
• Analog I/O: 2 inputs, 2 outputs (0-10 Vdc)
• High-speed counters: 2 × 10 kHz
• Pulse outputs: 4 fast PTO/PWM (up to 100 kHz)
• Expansion: Up to 7 TM2 modules; max 248 I/O
• Operating temperature: 0...+55 °C
• Protection rating: IP20

Integration and Communication

The TM218LDA40DR4PHN supports Modbus TCP over Ethernet, CANopen master functionality, and Modbus RTU/ASCII over RS-485. These protocols allow direct integration with HMIs, drives, and remote I/O without additional communication hardware. When wiring into fieldbus networks, an external gateway or connection module may be required; confirm cable and gateway compatibility with AutoDCSTech before installation. The built-in mini USB-B port simplifies programming via SoMachine or EcoStruxure Machine Expert software.

Applications and Use Cases

This controller suits standalone machine control, packaging equipment, material handling, and small process skids. Its relay outputs directly switch inductive loads, while the analog channels handle temperature or pressure signals. The 10 kHz high-speed counters enable encoder feedback for positioning tasks. Because the unit is self-powered, it eliminates backplane power budgeting concerns.

Lifecycle Status and Availability

The TM218LDA40DR4PHN is discontinued. Schneider Electric recommends the Modicon M221 as a replacement. Please verify current lifecycle status and availability with AutoDCSTech before ordering. Contact AutoDCSTech with your exact requirements for precise matching.