Overview
Overview
IIoT Edge Gateway is a DIN-rail industrial computer that bridges your existing PLCs, drives, sensors, and meters to MQTT brokers, REST APIs, and cloud platforms — without replacing a single existing controller. It talks Modbus TCP/RTU, Profinet, EtherNet/IP, S7, OPC UA, BACnet, DNP3, and IEC-104 on the south side; MQTT, REST, AMQP, Kafka, and OPC UA on the north side; and runs Node-RED, custom Python, or container workloads at the edge.
Built for plants where legacy controllers refuse to die but the management team wants real-time KPIs in the cloud. Store-and-forward buffering keeps data safe through WAN outages, OTA updates roll out new firmware safely with rollback, and TLS + X.509 certificates secure every northbound connection.
- 40+ protocol drivers south — PLCs, drives, meters, RTUs, sensors
- MQTT / REST / Kafka / OPC UA north — cloud or on-prem
- Edge analytics — Node-RED, Python, Docker containers, rules engine
- OTA + delta updates — signed, rollback-safe, fleet-wide
How It Works
Each southbound driver polls or subscribes to its protocol on its own schedule, normalises the values into a unified tag model, and pushes them through an edge pipeline. Rules can fire local alarms or trigger writes back to the PLC; messages flow north with QoS guarantees and a 7-day store-and-forward buffer if the WAN goes down.
- Southbound poll — multi-protocol drivers, parallel, per-device cycle times
- Normalise — engineering-unit scaling, deadband, quality flags, tag metadata
- Edge process — rules engine, anomaly detection, aggregation, ML inference
- Northbound publish — MQTT QoS 0/1/2, REST batch, Kafka, OPC UA Server
- Store & forward — up to 7 days of compressed history when WAN is unreachable
Features
- 40+ protocols — one box replaces a stack of gateways
- Container runtime — Docker / Podman with resource limits per workload
- Node-RED low-code — drag-and-drop edge flows for non-developers
- Fleet management — central console for hundreds of gateways
- Secure by default — TLS 1.3, X.509 mutual auth, secure boot, signed firmware
- Cellular failover — built-in LTE Cat-4 with carrier-grade SIM management
- OPC UA Server — expose any southbound tag as an OPC UA node to SCADA
- Edge ML — run TensorFlow Lite / ONNX models on incoming streams
Use Cases
- Legacy PLC modernisation — lift data from S7-300, ControlLogix, Mitsubishi Q without touching the program
- Energy & sub-metering — aggregate dozens of Modbus RTU meters into one MQTT stream
- Predictive maintenance — vibration / current trend from drives uploaded to cloud ML
- Remote pumping stations — cellular gateway with local rules and store-forward
- Multi-site SCADA consolidation — one OPC UA aggregator per plant feeding HQ
- Smart building integration — bridge BACnet HVAC to cloud analytics
Specifications
- CPU: Quad-core ARM Cortex-A72 1.8 GHz / optional Intel x86-64 Atom
- Memory: 2 GB / 4 GB / 8 GB RAM, 16 GB / 32 GB / 64 GB eMMC + microSD slot
- Ports: 2–4× Gigabit Ethernet, 2× RS-485, 1× RS-232, 1× CAN, 2× USB
- Wireless: Wi-Fi 802.11ac, BT 5, LTE Cat-4 / Cat-M1 / NB-IoT options
- Power: 9–36 VDC, 8 W typical, optional PoE-PD
- Environment: −30 to +70 °C, IP30, 5–95 % RH, DIN-rail mount
- Security: Secure boot, TPM 2.0, TLS 1.3, X.509 mutual auth, signed OTA
- Certifications: CE, FCC, UL 508, EN 61131-2 IIoT, optional ATEX Zone 2
Product information
| Product name | IIoT Edge Gateway |
|---|---|
| Category | Factory Automation |
| Type | Hardware |
| Procurement | Contact / Negotiable |
Customisation options
- CPU / RAM — ARM A72 quad / Intel Atom x86; 2 / 4 / 8 GB RAM; pick by container workload
- Southbound protocol pack — choose from Modbus, Profinet, EtherNet/IP, S7, OPC UA, BACnet, DNP3, IEC-104, CC-Link, KNX
- Northbound integration — AWS IoT Core, Azure IoT Hub, Google Cloud IoT, ThingsBoard, SGT Cloud, or your private MQTT/Kafka
- Cellular failover — LTE Cat-4, Cat-M1, NB-IoT, or 5G; dual-SIM with carrier-grade failover
- Edge runtime — Node-RED low-code, Docker containers, Python custom apps, or all three
- Store-forward depth — 24 h, 7 d, or 30 d encrypted on-board buffer for WAN outages
- Security hardening — TPM 2.0, secure boot, signed OTA, custom X.509 PKI integration
- Hazardous-area — standard IP30, optional ATEX Zone 2 or IECEx enclosed variant
Ordering & lead time
Standard lead time depends on current stock. For volume orders, please contact our team for a structured quote including BOQ, freight, installation and warranty terms.
Support
Engineering support, installation guidance and warranty claims are handled by our customer success team. Reach us at support@sgtsystems.com or via the channels listed on our Contact page.