Modbus is a widely-used industrial communication protocol that enables reliable data exchange between field devices and supervisory systems. In Sunell security products—including AI IP Cameras, Thermal Cameras, and PTZ Cameras—Modbus provides seamless connectivity to PLC, SCADA, BMS, and industrial IoT platforms.

Modern security cameras are no longer standalone imaging devices—they are sensors, event sources, and part of industrial automation workflows. Modbus extends Sunell devices into:

• Industrial monitoring

• Energy & utility management

• Manufacturing automation

• Smart city infrastructure

• Thermal safety inspections

✔ AI IP Cameras

Supports Modbus event output, device status reporting, and basic control integration.

✔ Thermal Cameras

Support real-time temperature data, high-temperature alarms, region measurements, and fire spot detection through Modbus TCP/RTU.

✔ PTZ Cameras

Support PTZ preset triggering, basic direction control, zoom commands, and event reporting through Modbus mapping.

Sunell cameras can push alarm events and AI analytics results to PLC/SCADA/BMS systems via Modbus. This enables real-time automation, safety monitoring, and efficient system response.

Typical Modbus Events:

• Human / vehicle detection

• Line-crossing, intrusion, region monitoring

• Temperature alarms (high temperature / fire spot)

• Device status (online / offline / tamper)

Modbus allows upper-layer systems to read operational data and diagnostics from Sunell cameras, supporting preventive maintenance and system-wide performance monitoring.

Telemetry Data May Include:

• Device temperature

• Network connection status

• Storage health (SD card status)

• CPU / AI module usage

• Uptime and diagnostic codes

Modbus enables basic PTZ control for Sunell PTZ cameras, allowing industrial systems to automate scene adjustments or respond to events.

Supported Modbus PTZ Functions:

• Call preset positions

• Pan / Tilt directional control

• Zoom in / out

• IR / white light control

• Snapshot / action triggering

Thermal cameras with Modbus provide structured temperature data for industrial automation and safety monitoring.

Modbus Thermal Data Includes:

• Max / Min / Avg temperature

• Region-based temperature (ROI)

• ΔT (temperature difference)

• Fire spot detection alarms

• Continuous temperature data stream

With Modbus TCP/RTU, Sunell cameras can seamlessly integrate into industrial and smart-city systems, enabling automated workflows.

Integration Examples:

• PLC-driven machine response to AI detection

• SCADA receiving thermal alarm feedback

• BMS reading camera telemetry for facility monitoring

• Industrial IoT dashboards aggregating camera sensor data

🌡 Overheat Monitoring

Real-time temperature → SCADA
Overheat alarm → PLC → Equipment shutdown protection

🏭 Factory Automation

AI camera detects abnormal events → PLC triggers mechanical action

⚡ Energy Systems

Thermal anomaly detection for energy storage cabinets, transformers, and power distribution rooms

🚉 Transportation & Smart City

Monitoring of road, rail, and station equipment + PTZ auto-linkage at the edge