HMI is the abbreviation of Human Machine Interface, "Human Machine Interface", also called Human Machine Interface. It is a platform for users and equipment to interact, can be connected to programmable program controller (PLC), inverter, DC governor, instrumentation and other industrial control equipment, using the use of display screen display, through the input unit (such as touch screen, keyboard, mouse, etc.) to write work parameters or input operating commands, to achieve the interaction between human and machine information.
PLC is generally connected to the HMI through the RS485/RS232 serial port, you can display the PLC device's operating data and environmental parameters, through the cloud configuration to realize the process of restoration and monitoring. We often see HMI in the industrial site, there is a large screen, may show the temperature, pressure, process steps and material counting and other information, through the touch-click way to operate, you can realize more easily equipment monitoring and management.
HMI is generally arranged in the industrial field, assume the local data input and output functions to realize the monitoring of equipment, while the role of industrial IoT gateway is real-time data collection and cloud, so as to realize remote monitoring and management. hmi can enhance the local monitoring and management capabilities, the gateway can enhance the ability of remote monitoring and management, the two are not in conflict. Of course, in terms of functionality and cost, the choice of industrial gateway to set up a better digital Internet of things, which is also the trend of future industrial development.
1. the realization of field equipment remote monitoring and management
The data collected from PLC in real time will be uploaded to the cloud platform through edge computing, supporting 5G/4G/WIFI/Ethernet and other networking methods, so that managers can always understand the operational status of the field equipment, such as PLC, inverters, servos, timely control and management, to ensure the safety of production.
2. Connect the industrial cloud configuration to restore the production process
Form a mapping with the industrial field production and process, free to build cloud configuration, to realize the production process of data-based virtual model, easy to locate at any time to the workshop and the scene. No need for professional knowledge and skills, employees can restore the process configuration by adding, dragging and dropping the picture model, realize equipment positioning monitoring, and quickly locate the abnormal state for control.
3. Improve the efficiency of equipment maintenance
Traditional industrial people and equipment are bound together, and the future is to free people, with the help of industrial gateway and equipment remote fast line, you can realize the PLC program remote download, PLC data acquisition, PLC remote debugging and other functions. Fast and timely remote maintenance, you can protect the production of equipment to extend the service life, but also to save travel maintenance brought about by the labor and expense.