IEC 61499 Meets PROFINET on TSN: Rethinking Industrial Control with ODOT’s D-Series PLC

What makes Profinet on TSN different?

PROFINET is widely adopted across industrial automation. However, conventional implementations based on Fast Ethernet (100 Mbps) can face limitations in applications requiring both high bandwidth and strict determinism.

Time-Sensitive Networking(TSN) addresses these challenges by enabling deterministic, low-latency communication over standard Ethernet. The integration of PROFINET with TSN provides a unified approach to achieve both real-time performance and network convergence — increasingly important in modern industrial systems.

At 2025 SPS Nuremberg / Chengdu International Industrial Fair 2026, one innovation stood out at the ODOT Automation booth — a Plc supportingIEC 61499 + PROFINET on TSN. What makes this combination particularly relevant for the future of industrial communication and control? Let’s take a closer look.

A closer look at ODOT’s TSN-enabled PLC

ODOT’s D-series PLC (DU03P) is designed around this architecture. With the DM-0531 expansion module, it implements PROFINET on TSN and connects seamlessly to DN-8532 TSN remote I/O, supporting TSN-based ring network topologies.

Key performance characteristics

High throughput
With Gigabit Ethernet support, the system significantly increases data capacity and improves I/O response times, making it suitable for high-speed and data-intensive applications.

High availability
TSN-based ring architectures enable near-zero recovery time in case of network interruptions, ensuring continuity in critical processes.
Compared with traditional redundancy mechanisms that may require tens to hundreds of milliseconds for recovery, this approach minimizes the risk of unplanned downtime.

Application scenarios

These capabilities make the solution particularly suitable for industries where availability and determinism are essential, including:

• Oil & gas and petrochemical processing
• Metallurgy and harsh industrial environments

In continuous production environments, even short communication interruptions can lead to safety risks or production losses. Deterministic networking and fast recovery are therefore critical.

In addition, the architecture is well aligned with emerging industries such as:

• Renewable energy
• Semiconductor Manufacturing

Engineering background and development

ODOT’s approach is built on long-term development in industrial communication and control. Since its founding in 2003, the company has progressively expanded from communication products to PLC systems, with ongoing R&D investment over the past decade.

The D-series PLC represents a further step in this evolution, integrating PROFINET and TSN to address limitations in traditional industrial Ethernet architectures.

Open standards and system flexibility

The D-series PLC supports both:

• IEC 61131-3
• IEC 61499

This enables users to combine established PLC programming practices with event-driven, distributed control architectures.

Support for programming languages such as C and C++ further extends flexibility for system development and integration.

The system is powered by the AIOSYS platform, covering both runtime and development environments.

Beyond the controller: a broader portfolio

ODOT’s offering extends beyond PLCs. Its D-series remote I/O adopts a modular design with detachable wiring terminals, simplifying installation and maintenance. Compatibility with mainstream PLC systems also allows flexible integration into both existing and new production lines.

The company’s portfolio includes:

• IP67-rated remote I/O systems
• EtherCAT and PROFINET master solutions
• D-series distributed I/O system
• Signal isolators
• Industrial Ethernet switches

Looking ahead

As industrial systems continue to evolve toward higher levels of connectivity and determinism, technologies such as PROFINET on TSN are expected to play an increasingly important role.

ODOT’s implementation reflects a broader industry trend toward converged, high-performance industrial networks — supporting the transition from conventional automation to more flexible and distributed architectures.