The Protech Systems SI-W000 is an IIoT edge controller that redefines what a Modbus PLC can be in the age of Industry 4.0. At its core, it is a fully functional Modbus RTU/TCP programmable logic controller. But it is also a web-configurable edge computing node, a multi-protocol data gateway, and an environmental monitoring device—all integrated into a single compact unit. Powered by a 32-bit ARM RISC processor, the SI-W000 is engineered to bridge the gap between traditional industrial control and modern cloud-based data architectures without requiring separate hardware for each function.

The most distinctive feature of the SI-W000 is its web-based configuration interface. Instead of relying on proprietary Windows software or specialized programming tools, engineers can access the controller's logic editor and system configuration pages through any standard web browser. This approach dramatically simplifies commissioning, remote maintenance, and multi-site deployment. The built-in intelligent rules engine and timer/scheduling functions allow complex automation logic to be defined through a graphical interface, reducing the learning curve for technicians who may not be proficient in traditional PLC programming languages. A built-in data logger captures operational data locally, providing a buffer against network interruptions and enabling historical trend analysis.

On the hardware side, the SI-W000 is designed for flexible I/O expansion. It supports local I/O boards that can be directly attached to the controller, as well as remote I/O modules that communicate over the industrial Modbus protocol. This hybrid approach allows the controller to adapt to both compact machine control applications and distributed monitoring systems spread across a facility. The controller itself includes integrated temperature and humidity sensors, adding environmental context to machine data—a valuable feature for HVAC control, cold chain monitoring, and data center management. A wireless module expansion slot provides a pathway for adding cellular or other RF connectivity, extending the controller's reach beyond wired networks.

Connectivity is comprehensive. The SI-W000 speaks the language of both the factory floor and the cloud. Native support for Modbus RTU and Modbus TCP ensures seamless integration with existing PLCs, drives, and industrial sensors. Simultaneously, support for MQTT, OPC UA, and CGI protocols allows the controller to publish data directly to cloud platforms, enterprise MES systems, or custom web applications without intermediate gateway hardware. This multi-protocol capability positions the SI-W000 as a powerful edge processing unit that can filter, aggregate, and forward only the most relevant data to higher-level systems, reducing network load and cloud storage costs. The SI-W000 is ideally suited for remote monitoring stations, smart factory initiatives, building automation, and any application where local control must be combined with enterprise-level visibility.

Technical Specifications