What is HMI?

- Aug 14, 2019-

HMI is the abbreviation of Human Machine Interface.HMI is the medium for interaction and information exchange between the system and the user, which realizes the transformation between the internal form of information and the acceptable form of human. There are HMI in all fields of human-computer information exchange.

 

1.The structure and working principle of HMI human-machine interface products

The human-machine interface product consists of hardware and software. The hardware part includes the processor, display unit, input unit, communication interface, data storage unit, etc. The performance of the processor determines the performance of the HMI product and this is the core of the HMI. Depending on the product class of the HMI, the processor can use 8-bit, 16-bit, 32-bit processors respectively. The HMI software is generally divided into two parts, namely the system software running in the HMI hardware and the screen configuration software running under the Windows operating system of the PC. Users must firstly use HMI's screen configuration software to create "project files" and then download the compiled "project files" to the HMI processor through the serial communication port of the PC and HMI products.



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2.Basic functions of HMI human-machine interface products

(1) Display of the working status of the device;

(2) Data, text input operation, print output;

(3) Production formula storage, equipment production data record;

(4) Simple logic and numerical operations;

(5) Can be connected to a variety of industrial control equipment networking.