



Introduction
The Yokogawa F3LE12-1T Ethernet Interface Module is a high-speed communication interface designed for FA-M3 PLC systems, enabling stable and scalable integration with industrial Ethernet networks. It allows seamless data exchange between PLC controllers and external systems such as SCADA platforms, engineering stations, MES, and industrial PCs.
Built for modern automation architectures, this module supports both 10/100 Mbps Ethernet communication and provides flexible networking functions for real-time monitoring, distributed control, and system-level data synchronization. It is particularly suited for applications requiring fast cyclic communication and efficient multi-node networking.
Technical Specifications
| Parameter | Specification |
|---|
| Model | F3LE12-1T |
| Module Type | Ethernet Interface Module |
| Series | FA-M3 |
| Ethernet Standard | IEEE 802.3 |
| Communication Speed | 10 / 100 Mbps auto-negotiation |
| Interface Type | 10BASE-T / 100BASE-TX |
| Communication Protocols | TCP/IP, UDP/IP, ICMP, ARP |
| Advanced Function | UDP messaging (high-speed data exchange) |
| Transmission Method | Baseband |
| Access Control | CSMA/CD |
| Max Cable Distance | 100 m (Cat5 or higher) |
| Network Topology | Star / switched Ethernet |
| PLC Integration | FA-M3 CPU direct access |
| Remote Functions | Monitoring, program upload/download, diagnostics |
| Data Communication | Real-time PLC ↔ PC / SCADA exchange |
| Power Supply | Via FA-M3 backplane |
| Power Consumption | Approx. 330 mA |
| Mounting | FA-M3 base unit slot |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -25°C to 75°C |
| Humidity | 10–90% RH (non-condensing) |
| Dimensions (W × H × D) | 28.9 × 100 × 83.2 mm |
| Weight | Approx. 0.10 kg |
Applications
The F3LE12-1T is widely used in industrial environments that require fast, deterministic Ethernet communication between controllers and upper-level systems. Its UDP-based messaging capability makes it especially effective in high-speed data exchange applications.
Typical applications include:
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Factory automation and SCADA integration
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Real-time production monitoring systems
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Multi-controller synchronized control systems
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Industrial data acquisition and analytics platforms
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Distributed automation in large manufacturing plants
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High-speed machine coordination systems
Its flexibility allows integration into both legacy and modern Ethernet infrastructures.
Advantages
One of the key advantages of the F3LE12-1T is its UDP/IP-based high-speed messaging capability, which enables fast and lightweight communication between PLC systems and external devices. This is particularly valuable in time-sensitive automation environments.
It also supports dual-speed Ethernet (10/100 Mbps auto-switching), ensuring compatibility with both older systems and modern industrial networks without requiring hardware changes.
The module enables direct PLC data access from network nodes, allowing real-time monitoring and control without additional communication programming effort.
Its remote engineering functions support program upload, download, and diagnostics via Ethernet, reducing maintenance time and improving system uptime.
Additionally, it provides stable CSMA/CD-based Ethernet operation, ensuring reliable performance even in busy industrial networks with multiple connected devices.
Technical FAQs
1. What is the main function of the F3LE12-1T?
It enables Ethernet communication between FA-M3 PLC systems and external devices such as SCADA and industrial PCs.
2. Does it support both 10 Mbps and 100 Mbps?
Yes, it supports auto-negotiation between 10BASE-T and 100BASE-TX.
3. What communication protocols are supported?
TCP/IP, UDP/IP, ICMP, and ARP are supported.
4. What is the key communication feature?
It supports high-speed UDP/IP messaging for fast data exchange.
5. Can it be used for real-time monitoring?
Yes, it supports real-time PLC data communication over Ethernet.
6. Does it support remote programming?
Yes, program upload, download, and diagnostics are supported.
7. What is the maximum cable distance?
Up to 100 meters using standard Ethernet cable (Cat5 or higher).
8. Is it suitable for SCADA systems?
Yes, it is widely used for SCADA and MES integration.
9. Does it require special software?
No, it uses built-in FA-M3 Ethernet communication functions.
10. What PLC system is it compatible with?
It is designed for Yokogawa FA-M3 PLC platforms.