The Unitronics UniStream series represents a paradigm shift in industrial automation, delivering a truly integrated all-in-one control platform that combines a powerful PLC, a vibrant HMI touchscreen, and flexible I/O in a single, compact device. Available in screen sizes from 5 inches to 15.6 inches, the UniStream platform provides a scalable solution for applications ranging from simple machine control to complex distributed automation systems. At its core is the free UniLogic programming software, an all-in-one development environment that unifies PLC ladder code, HMI screen design, hardware configuration, and communication setup—cutting development time by up to 50% compared to traditional PLC platforms.

One of the UniStream platform's most innovative features is Virtual HMI. Unlike conventional PLCs that require a dedicated physical HMI panel at the machine, UniStream stores and runs both the control program and the HMI user application directly within the PLC itself. This unique architecture enables operators and engineers to view and operate the machine, monitor processes, and access diagnostic information from any mobile phone, PC, or remote display device with a standard web browser or VNC client. This capability dramatically reduces hardware costs, simplifies system architecture, and provides unprecedented flexibility for remote monitoring and maintenance scenarios.

The UniStream Cloud series takes IIoT integration to the next level with built-in, no-cost UniCloud services. Every Cloud-series PLC includes a pre-paid five-year Start-up Subscription with no monthly fees. Users simply connect the PLC to the UniCloud platform, use the built-in setup assistant to design a no-code dashboard, and go live in less than 30 minutes. The platform provides secured remote access with up to 1 GB of monthly traffic, enabling OEMs and machine builders to offer remote monitoring, predictive maintenance, and after-sales services without requiring cloud programming expertise or dedicated IT infrastructure. Native support for MQTT, EtherNet/IP, SNMP, SQL, Web Server, and FTP ensures seamless integration with enterprise IT systems and cloud platforms.

Under the hood, the UniStream series delivers industrial-grade performance with a bit operation speed of 0.13 microseconds and 1 MB of ladder memory. The platform supports an extensive array of I/O options, including digital, analog, high-speed counting, and temperature measurement, expandable up to an impressive 2,048 I/O points using local Uni-I/O™ modules or remote EX-RC1 adapters over CANbus at distances up to 1,000 meters. Process control capabilities are equally robust, with built-in auto-tune PID supporting up to 64 independent control loops. Advanced features include recipe management and data logging via data tables, a microSD card slot for backup and cloning, function blocks and user-defined structures, and multi-level password protection for security. Communication options are comprehensive: standard Ethernet, USB host and device ports, RS485, and optional CANbus, RS232, and additional serial ports via expansion modules. Protocol support covers virtually every industrial standard, including MODBUS TCP/RTU, EtherNet/IP, CANopen, BACnet, SNMP, and KNX/M-Bus via gateway, with a Message Composer tool for implementing custom third-party protocols.

The hardware is built to withstand demanding industrial environments. The front face of the HMI panel carries IP65/66 and NEMA 4X ratings, providing complete protection against dust, water jets, and washdown conditions when properly panel-mounted. The controller operates reliably across a temperature range of -20°C to 55°C and carries UL, CE, and EAC certifications, including approval for Class I Division 2 hazardous locations. The DIN-rail mountable design simplifies installation, while the 24VDC power supply and CR2032 backup battery ensure reliable operation and data retention. Additional convenience features include built-in alarm screens compliant with ANSI/ISA standards, multi-language display support, a rich drag-and-drop graphic library for HMI design, and media support for video (MPEG-4), audio (MP3), and PDF viewing.

Applications

The Unitronics UniStream series is deployed across a wide range of industrial and commercial automation applications:

• Machine Automation: Packaging machinery, material handling systems, assembly lines, and special-purpose machines.
• Process Control: Temperature regulation, pressure control, flow management, and multi-loop PID applications.
• Remote Monitoring & IIoT: Pump stations, wellheads, distributed equipment, and any application requiring cloud-based dashboards.
• Building Automation: HVAC control, lighting management, and energy monitoring systems.
• Water & Wastewater: Treatment plants, pumping stations, and distribution network monitoring.
• OEM Equipment: Integrated control solutions for machine builders requiring a compact, all-in-one controller.

Technical Specifications