PID controlled line follower robot

I was trying to follow the example provided https://www.mathworks.com/help/supportpkg/arduino/examples/arduino-robot-line-follower-application.html to simulate and model my line follower robot project. The steps were not clear enough for me. How cn I get scope results for response.

[Harit Trivedi]

Hi.
Your question is not clear , how ever I think you can use pointers for seleting two points on the scope and the compare the response time.