All-in-one PLC UniStream®

integratedboxwith integrated I/O

Overview
Unitronics UniStream PLC + HMI delivers a single platform for managing data center cooling and energy systems, combining control, communication, visualization, and monitoring in one device. The solution is presented as a ready-to-deploy Data Center Control Bundle that minimizes integration risk and eliminates the need for protocol gateways.

Awards
Product of the Year 2026 — Gold Winner (Control Engineering).

Key benefits

• Simplified system design: PLC + HMI with built-in I/O — no separate hardware required.
• Native protocol support: eliminates gateways and translation layers for direct communication with DCIM and facility systems.
• Lower integration risk: fewer potential points of failure and reduced integration complexity.
• Robust industrial design suitable for harsh environments.

Data Center Bundle highlights

• PLC + HMI with built-in I/O — one enclosure handles control, I/Os, communication, visualization, diagnostics, and monitoring.
• Native Redfish server with OCP profiles implementation for DCIM integration.
• Support for IPv6, SNMP, SQL, MQTT, BACnet, Ethernet, Modbus, OPC UA, and REST API.
• Direct communication with cooling and power equipment — no protocol gateways required.
• Remote monitoring and firmware updates via secure connection.
• Industrial certifications: CE, UL, cUL.
• Operational temperature range indicated: -20°C to 55°C.

Unitronics unique advantages for data center cooling & energy control

• 100% control in one box — control, I/Os, communication, visualization, diagnostics, monitoring.
• Direct communication with other systems: BACnet, SQL, Modbus, OPC UA, REST API, EtherNet/IP.
• Native Redfish, OCP profiles, SNMP, and full IPv6 networking for modern DCIM integration without protocol converters.
• Deterministic industrial PLC architecture for robust control, alarm handling, and redundancy logic.

Protocols & standards (native support)

• Redfish (DMTF) — native server implementation for DCIM integration and server lifecycle management.
• OCP (Open Compute Project) — OCP-aligned architecture.
• IPVS / IPv6 — full IPv6 networking stack.
• BACnet & Modbus — industry-standard protocols for HVAC and building management.
• OPC UA, SNMP, MQTT — industrial automation and IT operations integration.
• REST API, EtherNet/IP, SQL, HTTP/S.

What is supported (systems)

• Cooling Systems: Coolant Distribution Units (CDUs), Rear Door Heat Exchangers (RDHx), CRAH/CRAC Units, Chillers & Cooling Towers.
• Energy Control: Power distribution, UPS systems, generator controls, metering.
• Data Center Peripheral Systems: Load banks / cooling commissioning equipment, leak detection systems, fuel management, environmental monitoring systems.

Technical features / specifications

• Platform: UniStream PLC + HMI (one integrated control platform with built-in I/O).
• Native protocols: Redfish, OCP profiles, IPv6, SNMP, BACnet, Modbus, OPC UA, MQTT, REST API, EtherNet/IP, SQL, HTTP/S.
• Zero-gateway architecture: direct communication to cooling equipment and DCIM platforms without additional gateways or protocol converters.
• Remote management: remote monitoring and secure firmware updates.
• Operational temperature: specified range includes -20°C to 55°C (industrial design for harsh environments).
• Certifications: CE, UL, cUL.
• Solution packaging: Data Center Control Bundle — tested solution designed for data center environments (ready to deploy).
• Proven field metrics: 35+ years in automation, deployments in 50+ countries, 1.7M+ systems in operation (Unitronics field statistics).