The Light Application Adaptor has a Red, Yellow, Green LED and switch connected as shown

  1. insert the EMANT300 Initialisation.VI and EMANT300 Close.VI from Functions palette using Select a VI

    Right mouse click to bring up the Functions Palette. Bring your mouse to Select a VI and click on the icon. Go to the Drivers folder and locate the VI library EMANT300.llb Select the two VIs

  2. From the same VI library, insert the EMANT300 Config DIO.VI This VI sets the configuration of the DIO. 8 bits (1 byte) determines the direction of the digital IO. Specifying the corresponding bit as 1 configures that bit as input and 0 as output. Since D0 – D2 (see above schematic) are outputs and D3 is an input we set the configuration byte to binary 0000 1000

  3. From the same VI library, insert the EMANT300 Write Digital Bit.VI Set the bit address and the bit state to drive the output accordling. Therefore, if we are interested to light up the Red LED then we set bit address=2 and bit state=F. When D2 output is low, current flows through the diode limited by the 220 ohm resistor to turn on the LED. Conversely, when output is high, the LED if off.

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