ETT-VGA 触摸屏设备 用于与计算机或显示设备连接

ETT-VGA

ETT-VGA is a touch screen device with a VGA interface, which is mainly used to connect with a computer or display device to achieve interactive operation by touching the screen.
ETT-VGA module
Use the internal relay skillfully to improve the reliability of PLC automatic control system
In this paper, the reliability of PLC automatic control system is studied deeply, and the methods to improve the reliability of the system are put forward. The practice proves that these methods are effective to improve the reliability of the system. Reliability PLC automatic control system, programmable controller because of strong anti-interference ability, high reliability, simple programming, high cost performance, in the field of industrial control has been more and more widely used. Industrial control machine as a central control unit, equipped with configuration software, the selection of large screen real-time monitoring interface, to achieve the dynamic display of each control point, data modification, fault diagnosis, automatic alarm, but also display query historical event records, the cumulative running time of the main components of the system, the process flow chart of each device, the structure of each device, etc. Serial communication is used between the central control unit and the lower machine PLC for data exchange, usually within 1000m using 485 twisted pair communication, more common distance can choose optical fiber communication, longer distance can also choose wireless communication. The next machine is controlled by PLC, according to the number of control objects, the scope of the control object, one or more PLC can be selected for control, and the data exchange between PLC is to use the internal link register to achieve data exchange and sharing.