I don't have any intentions of derailing the thread but have you used proneta mk42?FYI, I think the PST has mostly been replaced by Proneta.
https://support.industry.siemens.com/cs/ww/en/view/67460624
It adds some really nice capabilities like topology viewing and IO checkout, but it isn't as simplistic as the older single purpose tool.
And you are right primary set up tool was very straight forward.