32PPC-120/140 User's Manual3.15 Infrared ModuleThis sensor on the front panel supports the optional wireless transmittingand receiving of infra-red data. (See Fig. 2-1.) You must configure thesetting through the BIOS setup (chipset features) to select whetherUART2 is directed for use with COM2 or IrDA.1. Place the panel PC and the infrared transceiving device (eg. printer)with their IrDA ports facing each other at the same horizontal level.The distance between the two IrDA ports should not exceed 1 meter(38").2. Run the infrared transceiving function on the panel PC. (The functionis supported by various operating systems and application software.)3. The transceiving device also needs to run its infrared transceivingdriver to receive or transmit data.3.16 Touchscreen (Optional)The touchscreen is connected to COM4. Its function is similar to that of amouse. The only difference is that you put your fingertip on the screen tomove the cursor.You will need to install the touchscreen driver before it will work. Thetouchscreen drivers for various operating systems are stored on theCD-ROM disc inside the accessory box. The touchscreen manual can alsobe found on this disc. Read Chapter 10 of this manual carefully before youinstall the driver.