HG1v4 Intelligent HART Gateway
HG1v4 Intelligent HART Gateway
The HG1v4 is an advanced, DIN-rail HART communications gateway for industrial and factory automation. It bridges HART field instruments to Modbus hosts, bridges HART network to HART network, provides a HART modem interface for standard device-management tools, and gives engineering staff secure remote access to field assets from anywhere — all configured from a web browser, with no PC software to install.
Why HG1v4
- HART-to-Modbus gateway — expose the full data set of your HART devices to any Modbus host: SCADA, DCS or PLC, over Modbus TCP/IP, RTU or Encapsulated RTU. Multiple Modbus clients simultaneously.
- HART multiplexer support — act as HART master for a Pepperl+Fuchs KFD2-HMM-16 multiplexer over RS-485, addressing up to 16 field transmitters per gateway. Scan, tick and import in the web UI.
- Built-in HART modem — present the loop to PACTware, FieldCare or SIMATIC PDM over serial or a virtual COM port, running alongside the Modbus gateway with automatic bandwidth arbitration.
- Secure remote access — reach the web UI, HART modem and Modbus data from anywhere over an outbound TLS tunnel. No VPN, no inbound firewall ports. Disabled by default; opt in per device.
Configured entirely from a web browser
Every task lives in the on-device web interface — add and configure HART transmitters, generate Modbus register maps (minimal, custom or legacy-compatible), commission field devices, monitor live HART data, run diagnostics, and apply firmware updates. Connect a PC or tablet to the same network, or reach the device directly on its link-local fallback address, and you are live. No Windows software, no COM-port tool chain.
Automatic, safe firmware updates
The gateway checks a signed download channel and notifies you when a new release is available. Every update is cryptographically signed and written to a redundant A/B partition — a failed update automatically rolls back to the last working image, with no site visit required.
Designed for security-by-design
The HG1v4 was engineered around the security-by-design expectations of the EU Cyber Resilience Act (CRA) and IEC 62443: signed firmware with automatic rollback, an outbound TLS-only remote tunnel with no inbound ports, no interactive SSH login, and version-pinned, documented releases. A published vulnerability-disclosure policy and per-release Software Bill of Materials (SBOM) follow ahead of the CRA milestones.
Upgrading from an HG1 v2? It's a drop-in.
Same DIN-rail footprint, same 24 V DC supply, same HART and Modbus wiring — no panel changes, no re-terminations. Power it up in place, browse to the device, and you are running. Under the hood it is a full platform refresh: new Microchip SAM9X60 industrial system-on-module, embedded Linux, a rewritten HART timing engine, improved RS-485 isolation, and an on-board supercapacitor for clean shutdown on power loss.
In the box
- HG1v4 Intelligent HART Gateway (DIN-rail)
- Quick Start Guide (also available online)
Technical specification
| Processor | ARM926 @ 600 MHz, Microchip SAM9X60 SiP |
| Memory | 128 MB DDR2 DRAM · 512 MB NAND flash |
| Operating system | Embedded Linux (Yocto) |
| HART interface | 1 × primary / secondary master · multi-drop · 250 Ω min. ext. loop resistance |
| HART multiplexer | Pepperl+Fuchs KFD2-HMM-16 — up to 16 field transmitters per gateway |
| Ethernet | 1 × 10/100 Base-T, RJ45 |
| Serial port | 1 × software-selectable RS-232 / RS-422 / RS-485 |
| Protocols | Modbus TCP/IP, RTU, Encapsulated RTU · HART-IP, raw HART modem |
| Configuration | HTTP / HTTPS web UI |
| Firmware update | Local push and signed OTA, redundant A/B partitions |
| Power | +24 V DC nominal · < 2 W |
| Connectors | RJ45 (Ethernet); 5.08 mm screw terminals up to 4 mm² (all other signals) |
| Mounting | Snap-on DIN rail (EN 60715 TH 35) |
| Enclosure | Flame-retardant PA 66 (UL 94 V-0) |
| Dimensions | 75 × 26 × 112 mm (W × D × H) |
| Operating temperature | −40 to +85 °C ambient |
| Humidity | 5 to 90 % non-condensing |
| Cybersecurity | Designed to meet EU CRA & IEC 62443 (see User Manual) |
EMC/safety re-certification for the HG1v4 is in progress; contact us for current certification status.
Documentation & downloads
- Product Datasheet (PDF)
- Quick Start Guide (PDF)
- Full User Manual (PDF)
- Support portal & software downloads
Support & warranty
Every HG1v4 includes one year of complimentary email and ticket support, plus all software updates. Chargeable services include on-site commissioning, custom HART device-template design, configuration, and extended support.