In this lesson we’re going to talk about the Diagnostics Buffer that is part of the Online and Diagnostics section in the PLC. These sections are used for determining what events have occurred, any hardware or software error, what error has occurred and stopped the PLC and details for that error, and much more. Knowing where to find this information is critical for troubleshooting problems. This lesson will describe where this data is located as well and some customizing for viewer experience. Let’s take a look at this lesson and do some diagnosing.