Morning all. Night shift lost outputs on the case packer. CPU 1214C DC/DC/DC with an SM 1223 DI16/DQ16 in slot 2, half the outputs on it dead and the DIAG LED on the module red. Swapped it for the spare off the shelf, same part as far as the shelf label goes.
Now the CPU ERROR LED flashes and nothing runs. Top of the diagnostics buffer says "Hardware configuration mismatch, module not found, slot 2" or close to it. I reseated the new module twice and power cycled, and putting the old one back brings the old fault but the CPU runs.
Is the CPU port damaged from pulling the module with the power on? That's what the day guy reckons. I'm not sure he's right, the old module still runs in that slot, so what else is there for it to object to?
Two things it could be. The order number on the new module isn't the same as the old one, or the clip isn't in and the bus connector isn't seated. The port on the CPU side is almost never it.
Read the 6ES7 number off the side of both modules and post them. A screenshot of the device view would help too.