This webinar is an introduction to Modbus communication and common Modbus system architectures, including the differences between Modbus RTU (RS-485) and Modbus TCP (Ethernet). It reviews real-world Modbus challenges—slow serial polling, wiring limits, noise, and multi-master conflicts—and then walks through ICP DAS USA solution categories that help engineers build more reliable networks. You’ll learn when to use Modbus gateways to bridge TCP and RTU devices, how serial port sharing enables two masters to access the same RTU slave network without collisions, and how Modbus data concentrators improve performance by pre-polling multiple slave devices and presenting the data quickly to TCP masters. The session also covers practical troubleshooting tools and accessories for RS-485 signal quality (bias/termination and repeaters/hubs), plus examples of displaying Modbus data on HMIs and integrating Modbus I/O with SCADA and data logging for industrial monitoring and control applications.
