METHOD OF MINIATURIZATION AND LOW POWER OF CAUTION WARNING PANEL

摘要

PURPOSE: A method for reducing the size and power consumption of a caution warning panel is provided to prevent the increased weight and number of parts necessary to a visual lamp and to reduce power consumption. CONSTITUTION: A method for reducing the size and power consumption of a caution warning panel is as follows. A discrete signal input circuit is designed by a programmable logic with 144 ports. The discrete signal input circuit converts the discrete signals of 80 series to signal levers according to operational conditions. The converted input discrete signals are inputted as CPLD in high and low states and is stored as discrete signal input data. In case of checking whether or not the input discrete signals are inputted, a main control device transmits a checking command to the CPLD. The CPLD analyzes an address contained in the command of the main control device by the checking command and transmits the 8-bit input data of the relevant address to the main control device.