Modbus in the browser: The Web-IO brings process data written by the master into the browser
Modbus systems are generally monitored using host computers on which specially adapted visualization software is installed. This limits the number of workstations which allow viewing into the system.
The new generation of Web-IO Boxes opens the way to modern web technologies for Modbus.
The Web-IO provides 128 bytes of freely writable memory in the form of virtual registers. The Modbus master can write any desired amount of process data to these registers. Using simple HTTP requests these process data can be read out by Web applications and displayed in the browser.