TM258LF42DT Compact PLC 42 I/O CANopen | Modicon M258 Controller

TM258LF42DT – Compact Logic Controller

Brand: Schneider Electric | Series: Modicon M258 | Type: Compact PLC

42 built-in I/O. 24V DC. CANopen master onboard. Fast 200kHz counting. Ethernet, USB, and serial links. Ideal for machine control and automation.

• I/O count: 42 (12 outputs, 24 inputs, 6 fast)
• Communication: CANopen, Ethernet Modbus TCP, USB, RS232/485
• Speed: 22 ns per Boolean instruction
• Memory: 128 MB Flash, 64 MB RAM
• Temperature: 0…55 °C (horizontal, no derating)

Technical Specifications

• General
  • Product ID: TM258LF42DT
  • Range: Modicon M258
  • Discrete I/O: 42 total
  • Outputs: 12 (4 fast), Inputs: 24 (10 fast, 14 regular)
  • Mounting: Symmetrical DIN rail
  • Weight: 0.55 kg
• Discrete Inputs
  • Voltage: 24V DC (sink or source)
  • Guaranteed ON: ≥15V, OFF: ≤5V
  • Current: 4 mA, Impedance: 6 kΩ
  • Filtering: Configurable 0, 1.5, 4, 12 ms; anti-bounce 2µs…4ms
• Discrete Outputs
  • Logic: Source, Voltage: 24V DC (19.2…28.8V)
  • Current: 4 mA per fast output
  • Isolation: 500Vrms between channels and logic
• Power
  • Supply: 24V DC (main, I/O segment, expert modules)
  • Limits: 20.4…28.8V
  • Max current: Main 0.26A, I/O segment 10A (peak)
  • Consumption: ≤ 13.03 W
• Performance & Memory
  • Instruction speed: 22 ns per Boolean
  • Flash: 128 MB, RAM: 64 MB
  • RTC: drift < 6s/month (calibrated)
  • Backup: CR2477M battery, 1.5 years
• Communication Ports
  • CANopen: Male SUB-D 9 (master), speeds up to 1Mbps
  • Ethernet: RJ45 (Modbus TCP slave, 10/100M)
  • Serial: RJ45 (RS232/RS485, Modbus RTU/ASCII)
  • USB: Mini-B (host) and Type-A, 480 Mbps
• Environment & Protection
  • Temp (operation): 0…55°C (horizontal), 0…60°C (derating), 0…50°C (vertical)
  • Storage: -25…70°C; Humidity: 5-95% non-condensing
  • IP20 (IEC 61131-2), Pollution degree 2
  • Vibration: 1 gn (8.4-150Hz), Shock: 15 gn
  • EMC: IEC 61000-4-2, -3, -4, -5, -6; CISPR 11
• Indicators
  • LEDs for I/O state, CAN, Ethernet, USB, APP, BATT, RUN/MS

Expert Review

“Powerful and compact.” 42 I/O in a small footprint. 22ns instruction speed handles fast logic. CANopen master simplifies motion control. Built-in Ethernet and USB ease programming and monitoring.

Manager’s Insight

“Cost-effective all-in-one.” No need for extra communication modules. Flexible I/O configuration. DIN rail mounting saves panel space. Reliable for harsh industrial environments. Backed by 12-month warranty.

Typical Applications

• Packaging machines
• Textile equipment
• Small conveyor systems
• HVAC and building automation
• Material handling

Compatibility

• Works with Modicon M258 expansion modules
• Supports EcoStruxure Machine Expert (SoMachine)
• CANopen drives (Lexium, Altivar) and remote I/O
• Modbus TCP/RTU for SCADA and HMI

Compare with Other Models

• TM258LF42DT – 42 I/O, CANopen, Ethernet
• TM258LF66DT – 66 I/O, more capacity
• TM258LF42DR – relay outputs version
• TM258LF42DTH – with additional high-speed features

Certifications

• CSA, cULus, C-Tick, GOST-R
• Standards: IEC 61131-2, UL 508, CSA C22.2 No.142 & 213

Package & Warranty

• In box: Controller, DIN rail clips, documentation.
• Warranty: 12 months.
• Shipping: 12-24h dispatch via FedEx, UPS, DHL.

Frequently Asked Questions

• • Can I use this controller with AC power?
  • No. The TM258LF42DT requires 24V DC only. Check the TM258LF42DR for 100-240V AC models.

• • What is the maximum CANopen cable length?
  • Depends on baud rate. At 125 kbps, max length is 500 m. At 1 Mbps, max is 4 m.

• • Does it support motion control?
  • Yes, via CANopen master. It controls up to 16 axes (drives) with built-in motion libraries.

• • How many expansion modules can I add?
  • Up to 7 expansion modules on the right side of the controller.

• • Is the real-time clock battery included?
  • Yes. The CR2477M battery is pre-installed and provides 1.5 years of data retention.

• What software do I need to program?
• Use EcoStruxure Machine Expert (formerly SoMachine) – version 1.2 or later.

Selection Guide

• Choose TM258LF42DT if: you need 42 I/O, CANopen, Ethernet, and USB in one compact unit.
• For more I/O: consider TM258LF66DT (66 I/O).
• For relay outputs: select TM258LF42DR.
• For high-speed applications: the built-in 200kHz counters are ideal.

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