6Name of each partRear viewDigital output terminal(DO)Use it to output digital signal (Indoor unit On/Off status)RS 485 communication terminalUse it to connect the 485 communication terminal ofan indoor unit or outdoor unit.Digital input terminal (DI-1 / DI-2)Use them to connect a device that generates a digital signal (e.g. fire sensor).DI-1 DI-2 DO RS 485 communication terminalBottom viewReset buttonUse it to reset the Touch Centralized Controller.• If there is no input to the Touch Centralized Controller for a while, it will be turned to screen protection mode(LCD backlight is turned off).• If you press the LCD ON/OFF button in the screen protection mode, the screen protection mode will end.• Even if the LCD backlight is status ‘off’, the Touch Centralized Controller is still in operation.NOTETouch-con_IB_03944A_2_EN.indd 6 2013-10-07 오후 2:11:29