Plc logo

[sam.drs1357]

Hi all,
I have to do a project with logo PLC. as I'm beginner in this would you plese help me to solve the problem.
I have 2 photoelectric sensors as Input which suppose to enable one out put of the plc if they sense an moving object.its important to have an output if the input one is enabled before input 2.otherwise if input 2 goes high then input 1 the output should be zero.
thanks

 

[nightline]

It's not difficult to tell you exactly how to do this, but the idea is to learn something...
So what do you think or have you tried so far?