Bench rig from the training room, moved onto the lab switch this week. CPU 1214C DC/DC/DC, one ET 200SP with IM 155-6 PN ST and three modules, TIA Portal V17.

I renamed the ET 200SP in Devices & networks from et200sp-bench to cell2-io so it matches the drawing, compiled, downloaded hardware and software. The CPU goes online fine, but device view shows the IM as Not reachable, ERROR red on the IM and the CPU ERROR LED flashing. I tried Assign IP address from Online & diagnostics and the accessible devices list is empty apart from the CPU. Rebooted both twice. Laptop is on the lab wifi, that is how I reach the CPU.

Is the IM broken? It was fine on the bench on Friday.