Schneider TM258LF66DT4L Compact Logic Controller

Schneider TM258LF66DT4L Compact Logic Controller

Product Introduction

The TM258LF66DT4L belongs to the Schneider Electric Modicon M258 series. This compact logic controller combines powerful processing, 66 digital I/O, and 4 analog inputs in one unit. Specifically, it targets machine builders who need higher point counts and built-in analog measurement. The controller runs on 24 VDC and fits DIN rail mounting inside standard cabinets. Meanwhile, its dual-core ARM Cortex-A8 processor separates program tasks from communication tasks. As a result, scan performance stays stable even under heavy network traffic. The TM258LF66DT4L supports up to seven TM5 or TM2 expansion modules, reaching a maximum of 2400 I/O points.

Technical Specifications

The processor uses a dual-core ARM Cortex-A8 architecture. Core1 handles program tasks, while Core2 manages communication tasks. Although clock speed is not published, scan speed reaches 0.022 µs per Boolean instruction. This equals more than 45,000 Boolean instructions per millisecond. Program memory holds 128 K instructions. Data memory includes 64 MB RAM internally and 128 MB Flash for storage.

For I/O capacity, the unit provides 42 digital inputs. Among them, 34 are regular 24 VDC inputs and 8 are fast HSC inputs rated at 100 kHz. Additionally, it offers 24 transistor outputs with source or PNP wiring. Each point delivers 0.5 A, and 4 of them are fast outputs. Moreover, the controller includes 4 analog inputs rated at 12-bit resolution. These accept 0-10 VDC or 4-20 mA signals. Furthermore, it supports 8 high-speed counters at 100 kHz and 4 fast reflex pulse outputs. Analog outputs are not available on this model. However, expansion modules can add analog output and special functions later.

Communication is a strong point of this controller. Built-in ports include one Ethernet RJ45, one CANopen SUB-D9, one RS-485 serial link, and one USB-B mini programming port. Protocols cover Modbus TCP, CANopen master, and Modbus RTU or ASCII. In addition, two free PCI slots accept optional communication or function modules. Therefore, users can add fieldbus cards without replacing the base unit.

Mechanical and Environmental Parameters

The housing measures 99 × 265 × 75 mm in height, width, and depth, with a wider body for 66 I/O. It carries an IP20 protection rating, so it must sit inside a clean enclosure. The supply voltage is 24 VDC, with a range of 19.2 to 28.8 V. Power consumption equals 18.11 W. Because the unit is self-powered, no backplane bus current applies. The net weight is approximately 0.8 kg.

Operating temperature ranges from 0 to +55 °C. With derating, it can reach +60 °C. Storage temperature spans -25 to +70 °C. Relative humidity sits between 10 and 95 percent, non-condensing. These ratings suit most industrial floors, but avoid condensation and direct moisture.

Installation Guide

First, mount the controller on a standard DIN rail inside a control cabinet. Keep at least 50 mm of free space above and below for airflow. Next, connect the 24 VDC supply to the dedicated power terminals. Verify polarity before switching on the power. After that, wire digital inputs, transistor outputs, and analog inputs according to the terminal diagram. Use shielded twisted-pair cable for analog and high-speed counter signals to reduce noise.

For communication, plug the Ethernet cable into the RJ45 port. Then connect CANopen or serial devices to their respective ports. Meanwhile, install SoMachine or EcoStruxure Machine Expert on your PC. Use the USB-B mini port for first-time programming. Finally, configure expansion modules and analog scaling in the software before running the machine. If you add PCI communication cards, power down the unit first.

Packaging List

• 1 × Schneider TM258LF66DT4L Compact Logic Controller

• 1 × Terminal block set

• 1 × Mounting clip pack

• 1 × Quick start guide

• 1 × Original carton box

Shipping methods: Fedex, UPS, DHL.

FAQ

Q1: What is the main difference between the TM258LF66DT4L and 42 I/O models?
A: This model offers 66 digital I/O plus 4 analog inputs. It suits larger machines that need more points and direct analog measurement.

Q2: What analog signal types does the TM258LF66DT4L accept?
A: The 4 analog inputs accept 0-10 VDC or 4-20 mA signals. Resolution is 12-bit for both ranges.

Q3: Which programming software supports this controller?
A: You can use SoMachine or EcoStruxure Machine Expert. Both tools support configuration, programming, and diagnostics.

Q4: How many expansion modules can I connect?
A: The controller accepts up to 7 TM5 or TM2 expansion modules. This can reach a maximum of 2400 I/O points.

Q5: What communication protocols does the TM258LF66DT4L support?
A: It supports Modbus TCP, CANopen master, Modbus RTU, and Modbus ASCII. Two PCI slots allow extra communication modules.