While using plc next engineer to run an example i ran into an error: The IP address 192.168.178.88 of device [axc-f-2152] lies above the network end address 192.168.1.254 Which makes some sense since indeed the 178 > 1. The PLC can be reached via secure shell its just the plc engineer tool which block usage. I was looking for a way to change the upper limit but so far no luck. PLCnext engineer version 2021.0.2 / build 4.7.1183.0. I did notice that in the older manual a screen was shown were you could change the upper limit, this seems no longer the case. Unfortunately this makes PLCnext engineer unusable. Any suggestion is welcome? I tried to look into configuration files since the limit must be set somewhere but those are not easy readable.
I added a revicsed screendump, original was to hard to read.
The screen shot on the left shows the Project settings, while the screen shot on the right shows the PLC settings. You can still change the upper IP address in the Project settings.
Ah, double click versus single click. Somehow this wasn’t very clear in the user interface. Lost some hours on it, next time i must click more often 
What would be nice is that when you click on the error, the appropriate settings editor pops up.