Tag Archives: SCADA

In the previous articles of this series we saw how to communicate with a single Siemens S7 plc. But it happens frequently to have to communicate with multiple PLCs. In that case, our HMI has to read and aggregate the data that are coming from the field and to react/notify ...

UPDATE 08/03/2017: I see that this article is quite popular, however it takes a simple approach to get you started, by using timers and other shortcomings. If you want to build your HMI with WPF and MVVM you can check also my new series HMI with C# and WPF. In ...

The lack of a standard on what colors to use on HMI screens is a serious problem, because the most of HMI graphic pages depended on the personal taste of the engineer that realized it. It’s not the first time that i see purple buttons, blue leds and green backgrounds. ...