In life, we often come into contact with the touch screen, and many people will regard the human-machine interface as a touch screen. In a strict sense, there is a fundamental difference between the two.

"Touch screen" is only the hardware part that may be used in the human interface product. It is an input device that replaces the mouse and keyboard functions and is installed at the front end of the display. The human interface product is a hardware and software. Human-computer interaction device. In the industry, people who have touch input functions are often referred to as "touch screens", but this is unscientific. The touch screen is a popular name for "touching human-machine interface"! The real touch screen is "a transparent glass that can be touched by hand"! It can be used instead of a mouse. Modify the human-machine interface knowledge.

Definition of man-machine interface products: Connect industrial programmable devices such as programmable logic controllers (PLCs), inverters, DC converters, meters, etc., using the display display, and writing through input units (such as touch screen, keyboard, mouse, etc.) The working parameters or the input operation commands, the digital device that realizes the interaction between the human and the machine information, consists of two parts: hardware and software. HMI is the abbreviation of English Human-Machine Interface. 2. Composition and working principle of human machine interface (HMI) 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 is the core of the HMI. unit. 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 (such as the JB-HMI screen configuration software) running under the Windows operating system of the PC. Users must first 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.