SCHNEIDER ELECTRIC TM258LF42DR Modicon M258 Compact Logic Controller

Overview

The SCHNEIDER ELECTRIC TM258LF42DR is a compact Modicon M258 machine logic controller designed for high-performance standalone machine automation. The SCHNEIDER ELECTRIC TM258LF42DR comes with integrated 42 discrete I/O including relay outputs and fast motion channels, supporting CANopen master, Ethernet and serial communication interfaces. It is programmed with EcoStruxure Machine Expert software and can expand I/O via TM5 modular system up to 2400 I/O points. The SCHNEIDER ELECTRIC TM258LF42DR is an end-of-life spare unit, widely used for maintenance and replacement of existing packaging, hoisting and conveyor control installations.

Features

The SCHNEIDER ELECTRIC TM258LF42DR includes fast input and fast output channels for high-speed position capture and motion triggering. It provides relay outputs for switching low-power loads and contactor circuits. The SCHNEIDER ELECTRIC TM258LF42DR integrates Ethernet, RS232/RS485 serial port, CANopen port, USB programming port and USB host port for data logging and recipe transfer. It supports real-time clock with backup battery and configurable input filtering for anti-bounce processing. The SCHNEIDER ELECTRIC TM258LF42DR adopts DIN rail mounting and removable terminal blocks for convenient wiring and direct replacement.

Specs

Device Type: Modicon M258 compact logic controller Model: SCHNEIDER ELECTRIC TM258LF42DR Total Built-in I/O: 42 discrete points Output Type: Relay output + fast transistor output Power Supply: 24 VDC Communication: Ethernet, RS232/RS485, CANopen master, USB Expansion: TM5 series I/O modules Programming Software: EcoStruxure Machine Expert Mounting: 35 mm DIN rail mount Protection Grade: IP20 Application: Packaging machine, conveyor system, lifting equipment, skid automation

Principle

The SCHNEIDER ELECTRIC TM258LF42DR executes cyclic logic and motion control programs according to IEC 61131-3 standards. It reads digital signals from sensors and fast position inputs, then drives relay outputs and fast outputs to control actuators. The CANopen interface connects servo drives and remote I/O nodes, while the Ethernet port exchanges data with HMI and supervisory systems. The controller continuously monitors supply voltage, bus communication and channel status. When communication failure or hardware abnormality is detected, the SCHNEIDER ELECTRIC TM258LF42DR executes predefined safe state logic and generates fault alarm messages.

Applications

The SCHNEIDER ELECTRIC TM258LF42DR is used for standalone machine control and small motion control systems in packaging and converting lines. It serves hoisting equipment, material handling and factory skid automatic control. The SCHNEIDER ELECTRIC TM258LF42DR applies to spare stock and emergency repair of legacy Modicon M258 control cabinets. It also supports retrofit projects for upgrading older machine automation systems.