Codesys Ros2 <2026>
CODESYS handles high-speed, deterministic operations like motion control, safety loops, and physical I/O management. ROS2 manages high-level, non-deterministic intelligence like LiDAR data processing, path planning, and AI-driven object recognition.
CODESYS Control Runtime follows a cyclic executive pattern:
We implemented a written in C++ (compiled as a CODESYS External Library) and exposed to IEC code via Function Blocks (FBs).
A library provided by Robin reads/writes data from the same shared memory, mapping them to CODESYS variables. Supported Data Types The bridge supports standard IEC 61131-3 data types: BOOL , BYTE , SINT , INT , DINT , LINT REAL , LREAL (floating-point) STRING Arrays and Custom Structs Message Mapping
Integrating (Robot Operating System 2) creates a powerful hybrid architecture that combines the deterministic, real-time control of industrial PLCs with the advanced perception and path-planning codesys ros2
Combining CODESYS and ROS2 allows engineers to leverage the strengths of both platforms simultaneously. This approach offers several key advantages:
To understand why this integration is challenging, one must understand the fundamental difference in philosophy.
The integration of is a game-changer for the future of industrial robotics. It breaks down the barrier between operational technology (OT) and information technology (IT/Robotics), enabling the creation of systems that are both highly reliable and deeply intelligent. As projects like ScalABLE40/robin show, bridging the gap between PLC and ROS is increasingly accessible. To give you more specific advice, tell me:
By using standardized interfaces like ROS 2 and CODESYS, companies can integrate components from different manufacturers more easily. Communication Strategies and Protocols A library provided by Robin reads/writes data from
Until recently, these two systems lived in isolation. But as "Industry 4.0" demands more flexibility, bridging CODESYS and ROS 2 has become the new frontier for engineers. Why Combine Them? Real-Time Reliability:
Runs navigation algorithms (SLAM) to determine the best path, running on a ROS-enabled computer.
Compile your workspace using colcon build , source the setup files, and execute your node. You can verify that data is streaming successfully out of the CODESYS environment by Echoing the ROS2 topic in a separate terminal terminal window: ros2 topic echo /plc_sensor_data Use code with caution. Key Challenges and Solutions
Based on community experience and existing projects, here's a practical guide to implementing a CODESYS and ROS 2 integration. The integration of is a game-changer for the
Flexible and easy to set up for state monitoring or simple command input. Implementing the Bridge: A Conceptual Workflow
The shared memory approach used by ROBIN is the most real‑time‑friendly. Because both processes are on the same machine and the data exchange does not involve the kernel’s network stack, latencies can be kept under 100 µs. In contrast, WebSocket or OPC UA over TCP/IP may add unpredictable delays due to network scheduling and protocol overhead.
DDS supports security features (authentication, encryption), which should be configured when integrating PLC systems into network environments. Conclusion
ROS 2 is fantastic for perception, but it is notoriously difficult to certify for functional safety (ISO 13849, IEC 61508). PLC code is not.
