Our FR5 commissioning laptop reaches the controller intermittently by ping but times out on the documented identity read. The integrator's laptop worked on the same cable. He has left with the laptop and most of the useful information.
I want a comparison someone can repeat before this becomes another controller settings experiment.
Our laptop has wired Ethernet and a VPN route for the same address range. The integrator has sent his interface settings. No overlapping route on his machine.
IT confirmed the request went to the VPN interface and corrected the laptop configuration. Identity retrieval now works repeatedly. They documented a commissioning profile for us. Considerably cheaper than the afternoon already spent blaming the script.