I have CompactLogix (newer than 20) driver that works on one gateway configure identically to a separate gateway attempting to connect from the same host that will not work. It goes from “idle” to “connecting”.
Here is the log from my new gateway:
However this same PLC is connected successfully to a separate gateway using the exact same configuraiton settings…
The only difference is that the new gateway is a newer version of Ignition 7.9.8 vs 7.8.2. It is a NAT’d hostname, but the device handles the NAT translation fine on the one so why would it not work with the other.