The 'delayed info' 1-bit relay is most efficiently implemented in RSLogix using the Binary file type, but it could also be implemented using the Integer (N) type, or the Floating Point (F) type, maybe even some others.

The important principle to be learned in this exercise is the use of a relay to pass information from one time (stage) to another later time. You could just as well use some other memory type. It is not the use of the Binary file type that is important here. I looked at your ladder and I trie to use binary's a few times, but I have not gotten that far in my training yet.Now is the time in your training to learn this. This excersise was based on word compare with only 1 timer. The version I posted does flash the Walk lights when Amber goes on.

I was first trying to get the walk lights to work when it was safe to walk then to flash when the amber light came on. Only the LAST one will have any effect, and all the others are just deadweight and confusion factors. Even for a trial, you should NOT have two versions of the same Output. Rungs 8, 9 and 10 were different ways I tried to get this to work. This can be reduced down to more consise logic this way: IF T4:1.ACC is LESS THAN 140, then turn on N/S Red light. Rung 2, N/S Red light: Branch 1 says IF T4:1.ACC is LESS THAN or EQUAL to 20, OR (Branch 2 says) IF T4:1.ACC is GREATER THAN 10 OR LESS THAN 140, then turn on light. Third, some of your comparison logic is a little flaky.

Think about it some, then if you can't solve it, look at the attached LogixPro program. I am sure that many pedestrains would curse your soul if such a scheme was actually used! You need to come up with a way to save a button-push for use later in the cycle. Your method so far for the Walk depends upon a pedestrian pushing the button when the Timer T4:0 is at a certain stage (E/W Amber On, or N/S Amber Not On). Second, your walk light logic needs to be designed so that a pedestrian can walk up AT ANY TIME and push the Walk button. Delete either rung 8 or 9 for the O:2/3 E/W Walk Light. First off, you should not normally have two rungs with the same digital output (redundant outputs).

Logixpro traffic control exercise 1