Larus-10
Larus-10 is an industrial IIoT gateway for data acquisition from Passers and other Modbus devices. Configured via a web browser without specialized IDEs. Transmits data to LimanISU 2.0, AWS IoT, Azure IoT Hub, and other platforms via MQTT and OPC UA.
Quick Facts
| Parameter | Value |
|---|---|
| Device type | IIoT gateway |
| Power supply | 24 V DC, 4.8 W / PoE 48 V 802.3af (optional) |
| Mounting | DIN rail 35 mm |
| Protection rating | IP30 |
| Status | 🟢 Active |
Key Features
- Protocol conversion — reads Modbus RTU/TCP, publishes via MQTT (TLS) and OPC UA without programming
- Store-and-forward — buffers data for up to 30 days during connection loss, auto-recovery on reconnect
- Aggregation and filtering — moving average, min/max, 3σ filter, on-change; reduces cloud traffic 10–100×
- Web configurator — initial setup in 30 minutes via browser, no software installation needed
- Up to 32 Modbus devices on an RS-485 bus, line length up to 1,200 m
- Industrial grade — −25…+50 °C, humidity 10–90% non-condensing, panel mounting
Technical Specifications
General Parameters
| Parameter | Value |
|---|---|
| Microprocessor | ARM Cortex-A55, 1.1 GHz (4 cores) |
| RAM | 4 GB LPDDR4 |
| Flash memory | 16 GB eMMC |
| Operating system | Linux |
| Configuration | Built-in web interface |
Electrical Specifications
| Parameter | Value |
|---|---|
| Supply voltage | 18–75 V DC (nominal 24 V ±10%) |
| Current consumption | 200 mA (max 300 mA) |
| Power consumption | 4.8 W |
| Recommended PSU | Mean Well EDR-150-24 (≥10 W) |
| Alternative power | PoE 48 V, 802.3af / 802.3at (optional) |
Interfaces and Protocols
| Interface | Description |
|---|---|
| Ethernet | 2 × 1 Gbit/s |
| RS-485 | 2 × port, Modbus RTU Master |
| CAN | 1 × CAN, CANopen |
| 1-Wire | 2 × 1-Wire |
| USB | 1 × USB 2.0 (configuration) |
| HDMI | 1 × HDMI (data display) |
| Protocols | Modbus RTU, Modbus TCP, MQTT (built-in NanoMQ broker), OPC UA Server/Client, CANopen |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (H × W × D), mm | 159.5 × 89.9 × 57.5 |
| Weight | max 0.4 kg |
| Mounting | DIN rail 35 mm (EN 60715) |
| Enclosure material | ABS plastic UL94:V0 |
| Protection rating | IP30 |
Operating Conditions
| Parameter | Value |
|---|---|
| Operating temperature | −25…+50 °C |
| Relative humidity | 10–90%, non-condensing |
| Climatic class | C4 (GOST R 52931-2008) |
| Atmospheric pressure | P1 (GOST R 52931-2008) |
Indicators
| Indicator | Color / state | Meaning |
|---|---|---|
| Status | Green | System powered and running |
| Yellow | Booting / starting | |
| Red | Critical error / emergency shutdown | |
| Off | No power | |
| Power | Green | Output power normal |
| Off | No load on output (18–36 V range) |
Variants
| Catalog number | Description | Features |
|---|---|---|
| LRS-10 | Standard version | DIN rail 35 mm, IP30 |
Certificates and Compliance
| Certificate / declaration | Number | Authority / registry | Validity |
|---|---|---|---|
| CE | — | — | — |
| Rosstandart Certificate | — | Rosstandart | — |
| Russian Ministry of Industry registry | — | minpromtorg.gov.ru | indefinite |
Use Cases
- Oil & Gas — monitoring of pumping and compressor equipment via Passer-V/Passer-T. Vibration and current readings are sent to LimanISU 2.0 for early fault detection.
- Energy — data acquisition from Modbus meters and OPC UA forwarding to MES/SCADA without replacing field devices.
- Utilities — remote monitoring of pumping stations. Store-and-forward ensures complete archives even with unstable GSM connections.
- Manufacturing — combining up to 32 Modbus sensors from different areas into a unified monitoring network.
Compatible Devices and Accessories
| Name | Type | Purpose |
|---|---|---|
| Passer-V | Data acquisition controller | Vibration monitoring, Modbus RTU slave |
| Passer-T | Data acquisition controller | Current monitoring, Modbus RTU slave |
| Larus-100 | Controller (PLC) | Upstream controller when local logic is needed |
| LimanISU 2.0 | SCADA/IIoT software | Target MQTT/OPC UA platform |
| microSD up to 256 GB | Accessory | Extended store-and-forward buffer |
Documentation and Downloads
| Document | Type | Version | Download |
|---|---|---|---|
| Datasheet | — | ↓ download | |
| User manual | — | ↓ download | |
| Technical specifications | — | ↓ download | |
| TR CU Declaration | — | ↓ download | |
| Product passport | — | ↓ download | |
| Mounting drawing | PDF/DXF | — | ↓ download |
| 3D enclosure model | STEP | — | ↓ download |
| Firmware release notes | HTML | — | ↓ open |
Mounting Drawings
Dimensional drawing — PDF Mounting drawing — DXF
Mounting: DIN rail 35 mm (EN 60715). Clearance: at least 25 mm above and below for ventilation.
Firmware and Configuration
After connecting to the network, the web configurator is accessible at http://<IP-address>/.
| Step | Section | Action |
|---|---|---|
| 1 | Network | IP, subnet mask, gateway |
| 2 | Modbus Slaves | Passer and sensor addresses, registers |
| 3 | MQTT Broker | Broker address, port 1883/8883 (TLS) |
| 4 | Topics | Register → MQTT topic mapping |
| 5 | Logging | Polling interval, buffer depth |
Typical topic format:
liman/<plant-id>/<device-type>/<device-id>/<parameter>
Example: liman/site1/passer/passer01/rms_ch1
Built-in firmware components:
| Component | Purpose |
|---|---|
nanomq | Built-in MQTT broker |
modmqtt_srv / modmqttd | Modbus TCP → MQTT gateway |
modmqttd_rtu | Modbus RTU → MQTT gateway |
opcua_srv / opcuamqtt | OPC UA Server/Client → MQTT |
canbridge | CAN → MQTT gateway |
web_ui | Built-in web configuration interface |
logrotate | Log rotation |
Firmware versions:
| Version | Date | What's new | Download |
|---|---|---|---|
| — | — | — | — |
Lifecycle and Support
Status: 🟢 Active (production and support) Planned EOL: not announced
Technical support:
When do you need Larus-100?
Larus-10 is a gateway only. If you need local control logic (PID controller, emergency interlocks, sequencer) or analog/digital I/O — choose Larus-100.