WOW 10k posts! How in the world did you ever have time? But glad you did.
The rung 5 was to lock out the Photo Sensor. I only wanted it active during the closing of the gate. Thus sensing if an auto was passing through while the gate ( a vertical arm if you will) was coming down. Then causing it to open .
Once satisfied and nothing obstructing the PhSen, the gate closes ,down limit opens and disables the Ph Sens.
Design before had the Ph Sens enabled all the time. If one passed in front of it, it would've opened the gate.
At the time I didn't think of it as goofy.
Will search for other inputs. But many thanks for yours.