June 23rd, 2020 
Use I/O simulation in Logixpro to simulate the following process.
The preset value of a timer (T4:0.PRE) can be changed by pressing and releasing 5 assigned PBNO switches (I:1/0, I:1/1,.). The five preset values are 10s, 20s, 30s, 40s, and 50s.
Hint: First move 5 Timer preset values to N7:0 through N7:4
N7:0 =100
N7:1 = 200
N7:2 =300
N7:3 =400
N7:4 =500
Second, use the switches to move the integers to T4:0.PRE (pressing a switch triggers the move)
Example. Pressing and releasing I:0/0 will change the preset value to 100
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