Bridge Every Serial Device to Your Network.
Bring legacy serial devices onto modern Ethernet networks with industrial-grade Modbus connectivity, MQTT integration, and secure web management — engineered, assembled, and tested in-house by Embed Square.
4×
RS-485 Ports
Independent serial channels
460800
Max Baud Rate
bps — legacy to modern devices
16
TCP Sessions
Concurrent Modbus TCP masters
12–28V
DC Power Input
Wide-range industrial supply
Key Features
Built for Secure Industrial Connectivity
HERON Gateway P2 is designed to bring legacy serial devices onto modern Ethernet networks while simplifying configuration, improving visibility, and supporting secure industrial deployment.
4 × RS-485 Serial Ports
Connect multiple field devices through four dedicated serial channels.
10/100 Mbps Ethernet Connectivity
Bridge serial networks to Ethernet for centralized monitoring and control.
Modbus RTU / ASCII / TCP Support
Integrate legacy serial devices with modern Ethernet-based systems.
MQTT v3.1.1 / v5.0 Communication
Enable publish/subscribe connectivity for cloud and SCADA workflows.
HTTPS Web Management
Configure and manage the device through a secure browser-based interface.
Role-Based User Access
Support controlled access for operational security and maintainability.
Signed OTA Firmware Update
Support remote firmware maintenance over Ethernet.
Software-Selectable 120 Ω Termination
Simplify installation and line matching per serial port.
12–28 VDC Power Input
Accept wide-range DC input for industrial cabinet integration.
300 to 460800 bps Serial Speed
Support a wide range of deployment requirements across field devices.
Fanless IP40 Industrial Design
Deliver reliable performance in space-constrained control environments.
DIN Rail Mounting
Install quickly in industrial panels and utility cabinets.
Ideal for PLC control, utility cabinets, building automation, and environmental monitoring.
Product Overview
Ethernet Enablement for Legacy Serial Infrastructure
HERON Gateway P2 is an industrial Modbus gateway designed to connect legacy RS-485 serial devices to Ethernet networks. The device bridges four RS-485 channels to one 10/100 Mbps Ethernet interface, enabling centralized monitoring, protocol conversion, secure configuration, and remote maintenance for distributed industrial assets.
The gateway supports Modbus RTU, Modbus ASCII, and Modbus TCP for integration between serial field devices and Ethernet-based control systems. It also supports MQTT v3.1.1 and v5.0, allowing selected data to be published to SCADA platforms and control data to be subscribed from external systems.
HERON Gateway P2 provides HTTPS web management, user access control, event logging, LED diagnostics, hardware watchdog support, and signed OTA firmware update over Ethernet. With fanless operation, IP40-rated plastic enclosure, and DIN rail mounting, it is well suited for industrial control and monitoring environments.
Typical Applications
Where this gateway is deployed
How It Works
One Gateway. Four Channels. One Network.
HERON Gateway P2 bridges RS-485 serial devices directly to your Ethernet network — converting Modbus RTU to TCP, publishing data via MQTT, and exposing configuration through a secure web interface.
Protocol Engine
Isolation built-in — power isolation (2–2.5 kV DC-DC converter), RS-485 surge protection, and transformer-coupled Ethernet galvanic isolation protect gateway and connected devices from ground loops and transients.
Specifications
Technical Specifications
Ethernet Interface
7 parametersGateway Functions
8 parametersSerial Port Specifications
12 parametersIsolation & Protection
3 parametersMechanical & Environmental
9 parametersApplications
Designed for Real Industrial Deployments
PLC Control Systems
Connect Siemens, Allen-Bradley, Schneider, and other Modbus-capable PLCs to your Ethernet control network — without replacing the existing serial wiring.
Utility Cabinets
Bridge energy meters, power analyzers, and protection relays in MV/LV panels to SCADA or building management systems over a single Ethernet connection.
Environmental Monitoring
Aggregate temperature, humidity, and gas sensors spread across large sites — all reading via RS-485 Modbus into one network-visible data point.
Building Automation
Integrate HVAC controllers, lighting systems, and access control units on RS-485 into BMS dashboards using standard Modbus polling over Ethernet.
Measuring Instruments
Read flow meters, pressure transmitters, and multi-function analyzers in process plants directly via Modbus RTU — no separate data logger required.
FAQ
Common Questions
Get In Touch
Request a Quote
Tell us about your application — RS-485 device count, protocol requirements, and deployment environment. Our engineers will respond within 24 hours.