Human-machine interface is quite common in modern society. It can be seen in many places. It can be said that it can be seen everywhere. For example, shopping malls, factories, streets, cinemas, schools, hospitals, etc., these places will use human-machine interface. Today, I will tell you about human-machine interface in detail.
A. Definition of human-machine interface products It is a digital device that connects industrial control equipment such as programmable controllers (PLCs), frequency converters, DC speed regulators, and instruments, uses display screens to display, writes working parameters or inputs operation commands through input units (such as touch screens, keyboards, mice, etc.), and realizes information interaction between people and machines. It consists of hardware and software. HMI is the abbreviation of Human-Machine Interface in English.
B. Composition and working principle of human-machine interface (HMI) products Human-machine interface products consist of hardware and software. The hardware part includes processors, display units, input units, communication interfaces, data storage units, etc. The performance of the processor determines the performance of the HMI product and is the core unit of the HMI. According to the different product levels of the HMI, the processor can be selected as 8-bit, 16-bit, and 32-bit processors respectively. 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 PC Windows operating system (such as JB-HMI screen configuration software). Users must first use the HMI screen configuration software to create a "project file", and then download the compiled "project file" to the HMI processor through the serial communication port of the PC and the HMI product for execution.
