Hi, Jim
This is a warning ( Abnormal/Normal Condition) Yellow/Green Flashing, When you get everything setup and working the way you want it, you can double click on it and a window will pop-up "Normalcy monitoring" asking reset normal monitoring Yes/No.
You probally changed something axis Port's Pins, recheck every thing is set/working properly including axis ref home...........
then double click and click yes, Then you've established a normal condition.
Hope this Helps, Chip