Modbus for Node‑RED
The most reliable Modbus implementation for Node‑RED. Connect energy meters, PLCs, sensors, and legacy equipment with ease.
Industrial-Grade Modbus
Battle-tested Modbus communication for production environments
Modbus TCP/IP
Connect to Modbus TCP devices over Ethernet with automatic connection management
Serial RTU
RS-485 and RS-232 serial communication with configurable baud rate and parity
Queue Management
Intelligent request queuing prevents device overload and ensures reliable communication
Auto-Reconnect
Automatic reconnection with configurable retry logic for robust production systems
Bulk Operations
Read and write multiple registers in single operations for high-performance data collection
Flexible Server
Create Modbus server (slave) instances to expose Node‑RED data to external systems
Energy 4.0 Use Cases
Real-world applications for energy monitoring and industrial automation
Energy Monitoring
Connect smart meters and power analyzers to track energy consumption in real-time. Build dashboards to identify waste and optimize energy costs across your facility.
Legacy Retrofitting
Add IoT capabilities to existing machinery without replacing controllers. Modernize brownfield installations with edge computing and cloud connectivity.
Solar & Renewables
Monitor inverters, battery systems, and renewable energy installations. Create unified dashboards for distributed energy resources management.
PLC Integration
Connect PLCs and industrial controllers via Modbus TCP or RTU. Bridge legacy automation systems to modern MQTT and cloud platforms.
Sensor Networks
Collect data from distributed sensor networks using RS-485 multi-drop configurations. Aggregate environmental data from hundreds of sensors efficiently.
EV Charging
Integrate electric vehicle charging stations with building management systems. Implement load balancing and smart charging schedules.
Available Nodes
The Modbus package includes these Node‑RED nodes
Modbus Client
TCP and Serial client configuration with connection pooling and queue management
Modbus Server
Create Modbus TCP or RTU server instances to expose data to external clients
Read Node
Read coils, discrete inputs, holding registers, and input registers
Write Node
Write single or multiple coils and registers with automatic data type handling
Flex Getter
Dynamic Modbus operations with function code and address from message input
Response Filter
Parse and transform Modbus responses with data type conversion and scaling
Compatible Devices
Works with all standard Modbus-compliant devices
Energy Meters
Janitza, Schneider Electric, ABB, Siemens, Carlo Gavazzi, Eastron, and more
PLCs
Siemens S7, Allen-Bradley, Mitsubishi, Omron, Beckhoff, and other Modbus-enabled controllers
Inverters
SMA, Fronius, SolarEdge, Huawei, Growatt, and other solar inverters
VFDs
ABB, Siemens, Danfoss, Schneider, Lenze variable frequency drives
Ready for Energy 4.0?
Join hundreds of engineers who trust PLUS for Node‑RED for their mission-critical Modbus applications.
