Overview

The ABB TU508-ETH is a real-time Ethernet terminal unit within the S500 I/O family, designed for AC500 PLC architectures. It features two RJ45 Ethernet ports and spring terminal blocks, providing a fast, secure, and tool-free interface between the CPU and I/O modules. This unit ensures reliable data exchange and system synchronization across distributed control networks.

Moreover, the TU508-ETH is engineered for high-reliability control environments, with compact dimensions and DIN rail mounting for easy integration. Its rugged design supports operation in industrial temperature ranges from –25°C to +70°C, making it suitable for harsh environments. Therefore, it is ideal for applications that demand stable Ethernet communication and modular system expansion.

Technical Data

Typical Applications

AC500 PLC Systems

Serves as the Ethernet interface for CPU and I/O modules in modular PLC configurations.

Industrial Automation Networks

Enables real-time communication between controllers, HMIs, and SCADA systems.

Machine Control Panels

Simplifies wiring and Ethernet integration in compact control cabinets.

Process and Factory Automation

Supports distributed I/O and remote diagnostics in high-uptime environments.

Example:
In a packaging line, the TU508-ETH allows seamless Ethernet communication between the main controller and distributed I/O modules, reducing latency and improving system responsiveness.

FAQ

Q: What protocols does the TU508-ETH support?
A: It supports Ethernet-based communication protocols used in AC500 PLC systems.

Q: Can it be used in outdoor environments?
A: No, it is rated IP20 for indoor use; outdoor deployment requires protective enclosures.

Q: Is it compatible with other ABB terminal units?
A: Yes, it integrates with other S500 I/O modules and AC500 CPUs.

Q: What’s the benefit of spring terminals?
A: Spring terminals provide tool-free, vibration-resistant connections for faster and more secure wiring.

Q: Does it support daisy-chaining Ethernet devices?
A: Yes, the dual RJ45 ports allow for daisy-chaining or ring topologies in Ethernet networks.