Dear Franck,

Translation via google:

"Hello everyone, I have a problem with a 1217C DC/DC/DC CPU, after a sudden power cut, the error led is fixed in red, the main led flashes yellow and the RUN led also flashes yellow. I have a 24MB MMC which I tried to do a factory reset with but the problem is still present. to do the factory reset, first the memory card came out empty, then in TIA and in the properties of the memory card, I chose the transmission mode then I removed the memory card from my PC and I turned off the CPU, inserted the MMC into the CPU and turned the power back on, Considered for several minutes but there was no change in the various CPU error LEDs. so, i am still stuck, i need your help to find a solution."

Unfortunately, this LED status is not described in the manual.

Have you also tried to download your project (hardware + software) to the plc again?

You can also try to download only HW config of cpu from a new empty project, maybe this helps.

Can you ping the cpu?

Can you connect to the CPU with TIA?

Status LEDs

regards

sancruz