HMI is the abbreviation of Human Machine Interface, "Human Machine Interface", also called Human Machine Interface. For example, in a factory, we want to collect the temperature, humidity and the status of the machines in the various areas of the factory to monitor and record these parameters through a main controller, and some unexpected conditions occur Can be dealt with. This is a very typical application of SCADA / HMI.
Generally speaking, the HMI system must have several basic capabilities:
· Real-time data trend display-immediately display the captured data on the screen.
· Automatically record data-automatically store the data in the database for future review.
· Historical data trend display-visually present the data in the database.
· Report generation and printing-can convert the data into a report format and print it out.
· Graphic interface control-the operator can directly control the machine and other devices through the graphic interface.
· Alarm generation and recording-users can define some conditions for alarm generation,
· For example, the temperature is excessive or the pressure exceeds the critical value. Under such conditions, the system will generate an alarm and notify the operator to deal with it.
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