The screen of the simulator, similar to the one shown above, should be visible. For this exercise we will use the simulation section Input / Output, which consists of 32 control switches and lights. Two groups of 16 suiches switches connected to input 2 cards our simulated PLC is. Similarly two groups of 16 Lights are connected to two output cards of our PLC. The two input cards have addresses "I: 1" and "I: 3" while the output cards are addressed as "O 2" and "O: 4".