EdgePLC: Open Hardware Foundation for Industry 4.0

Imagine you are a factory equipment manager. Five years ago, you purchased a batch of international-brand PLCs for production line control. They ran well and never caused major problems.

Then three troubles appear.

First, you want to add AI visual inspection. The supplier says the existing PLC lacks enough computing power. You need an additional AI inference box, a new communication link, a new protocol, and a new debugging process.

Second, you want to connect production data to the MES system and enable automatic process-parameter adjustment. The supplier says the PLC protocol is proprietary. You need a protocol conversion gateway—and even then, “automatic process adjustment” is not well supported by the existing PLC architecture.

Third, a key chip in the PLC is discontinued. The supplier recommends replacing the entire control system. That means the original control program, I/O wiring, and operator interface must all be rebuilt.

Three troubles, one root cause: you did not buy a controller. You bought a black box. Hardware and software are deeply bound together. External systems struggle to interact with it. Users struggle to extend it. This is not one vendor’s problem. It is the underlying logic the traditional PLC industry has run on for half a century.

Traditional PLCs use an integrated hardware-software design. That made sense when computing resources were scarce and communication was limited. Fixing control software onto dedicated hardware was the best way to ensure reliability.

Today, that “best solution” has become a shackle.

IDC points out that the closed ecosystem of traditional industrial control—with tightly coupled hardware and software—can no longer meet future production management needs. Industry analysts expect software-defined controllers (SDCs) to gain rapid adoption in high-end industrial control. The shift is clear: from hardware-dominated systems to hardware-software decoupling.

Chris Schulze, Vice President of Sales at CODESYS Group, offers a direct judgment: the future of the PLC is virtualized, open, and AI-enabled.

The industry is moving toward three layers:

• SoftPLC | Control Software: PLC control programs run on general-purpose hardware. Control functions are decoupled from hardware.
• vPLC | Cloud-Based Concept:SoftPLC is deployed in virtualized environments, enabling cloud-based, centralized, and highly elastic control.
• EdgePLC | Hardware Carrier: A hardware platform designed for intelligent manufacturing. It natively supports IEC 61131-3 and CODESYS SoftPLC software, with built-in NPU AI capability.

As the architecture diagram puts it: SoftPLC is the soul of control. EdgePLC is the intelligent body. vPLC is the deployment concept for the digital world.

This means control logic is being liberated from hardware. It is no longer locked into one chip or one device. It can migrate, deploy, and upgrade across hardware platforms like ordinary software.

But one key point is often overlooked: software can be decoupled, but hardware cannot disappear. Whether control logic runs on an industrial PC, a server, a container, or an edge device, it still needs a physical carrier. It must connect sensors, drive actuators, and process I/O signals. That carrier cannot be “just any computer.” It must survive harsh industrial conditions: wide temperature, vibration, EMC protection, hardware watchdog, and DIN-rail mounting.

So what kind of hardware platform can truly carry the idea of hardware-software decoupling?

Hardware-software decoupling is moving from consensus to implementation.

Congatec and CODESYS announced a strategic partnership. Using hypervisor virtualization, they turn industrial controllers into software PLCs compliant with IEC 61131-3. A general-purpose operating system and CODESYS real-time control run in parallel. CODESYS virtual control solutions have been deployed at scale by global manufacturers such as Audi. The virtual PLC is certified to SIL3 and reliably supports core production scenarios such as body shops.

Phoenix Contact held the “SoftPLC & vPLC Open Automation Software Technology Seminar” in Nanjing, focusing on virtual control, 5G, edge computing, open automation, and industrial AI.

These examples show that decoupling is not “future tense.” It is “present continuous tense.”

The EdgePLC industrial AI edge controller was not designed as a “better PLC.” It was designed as an open hardware foundation.

It solves hardware lock-in first. EdgePLC uses a SOM (System on Module) platform design. The same host can select different computing platforms based on project needs—from Allwinner T113-i (BL233) to Rockchip RK3588 (BL245). Computing power is configured on demand. When you need to upgrade from T507 to RK3588, you do not replace the entire control system. You replace the SOM core board.

It also solves software lock-in. EdgePLC runs Ubuntu 20.04 + Linux-RT real-time kernel. It natively supports CODESYS Runtime, OpenPLC, NexPLC, and other IEC 61131-3 compliant soft PLCs.

In early 2026, Beilai Technology formed a deep strategic partnership with CODESYS Software Group. The entire EdgePLC series now supports genuine CODESYS authorization. Engineers can use the CODESYS development environment to write control logic in ladder diagram, function block diagram, and structured text. All five IEC 61131-3 programming languages are supported, with almost no learning curve. Control programs can migrate freely between hardware platforms. Run CODESYS on T507 today; upgrade the project to RK3588 tomorrow—no need to rewrite the program.

Genuine authorization also brings a less visible but critical value: in an era of increasing intellectual property scrutiny, it helps customers reduce legal risk and supports Chinese equipment in passing European and American compliance audits.

More importantly, EdgePLC is not just a computing box. It retains the full PLC DNA: DIN35 rail mounting, -40~85°C wide-temperature operation, EMC Level 3 protection, and an independent hardware watchdog. It supports up to 32 N-series distributed I/O modules, covering DI, DO, AI, AO, RTD, TC, and other signal types.

Real-time control has also been verified. The Linux-RT + IgH EtherCAT master solution based on Allwinner T507-H has been tested under CPU idle, full load, and isolated-core conditions. System latency remains stable at the microsecond level. With isolated CPU cores, maximum latency can be as low as 41 µs. This is not a theoretical figure. It is engineering-verified performance.

This is not a contest of “who is better.” It is a collision between two eras: closed and open.

The walls of industrial control are being pushed down.

The traditional PLC black-box model locks users into a single vendor’s ecosystem. The EdgePLC open-foundation model returns choice to the user. What software to run is your decision. What hardware to use is your decision. Where control logic runs is your plan.

EdgePLC is not a closed box. It is an open foundation.