The touch screen is a micro programmable terminal using a LCD touch screen in Chinese language (with back lighting). Both characters and graphs can be displayed on it. The communication is assumed by the communication interface and the PLC peripheral interface. Its main functions consist of parameters setting on the spot, artificial control of operation conditions of the functional units like power changeover box and air conditioning group, display of running condition parameters, real-time display of running states of different functional units and real-time report of failures.
Display of characters and graphs: 20×15 Chinese characters LCD monitor: 320×240 points Effective display area: 122×92mm