What is Modbus?
Modbus is a communication protocol used to transfer data between control systems, sensors, and other equipment in industrial environments.
How does Modbus work?
Modbus follows a primary/secondary model. A primary device—typically a controller or PLC—sends requests to one or more secondary devices, which respond with the requested information or carry out a command. The protocol is simple, easy to implement, and proven reliable in demanding conditions.
Benefits of Modbus:
- Modbus RTU – Serial communication (RS-232/RS-485)
- Modbus ASCII – Text-based version
- Modbus TCP/IP – Uses Ethernet for fast and flexible data transfer
Fördelar med Modbus:
- Easy to implement
- Flexible applications
- Robust in harsh environments
Use Cases:
- Industrial automation
- Energy systems
- Building automation
- SCADA systems