find the knot with maximum voltage

[lorenzosimon]

hello to all, with ansys mechanical apdl (I am a student and I have no experience of this software) I performed an elastic analysis on a plate with a certain geometric to calculate the stress intensifying factor, I wanted to ask how do I find the knot with the maximum voltage (first main voltage)?
I need the node number or its coordinates

 

[volaff]

if you know the number of the node you also have its coordinates.