Modbus TCP/RTU

The universal industrial communication standard. Connect PLCs, VFDs, energy meters, and thousands of legacy devices using the protocol they already speak.

How Flowstate Connects

Modbus is the most widely supported industrial protocol, available in TCP (Ethernet) and RTU (serial RS-485) variants. Flowstate's edge nodes run Node-RED with Modbus client nodes that poll your devices on configurable intervals. Register maps are pre-configured for common devices (ABB drives, Schneider meters, UR cobots) and customizable for any Modbus-capable device.

1Edge node connects via Ethernet (TCP) or RS-485 converter (RTU)
2Node-RED polls device registers on configurable intervals
3Pre-built register maps for 50+ common device models
4Custom register maps created from your device documentation

Compatible Device Types

Variable frequency drives (ABB, Yaskawa, Schneider)

Energy meters and smart breakers

PLC I/O modules

Collaborative robots (Universal Robots, FANUC CRX)

Temperature controllers

Pressure transmitters

Sample Metrics You'll Get

Metric	Unit	Description
Motor Speed	RPM	VFD output frequency converted to shaft speed
Motor Current	A	Per-phase current draw from drive
Active Power	W	Real power consumption from energy meter
Joint Torque	Nm	Robot joint load from cobot controller
PLC Register	varies	Any holding/input register from PLC

Ready to Connect Your Modbus TCP/RTU Devices?

We handle all protocol configuration, edge deployment, and cloud integration. You just see the data.