Lost profibus node (op77)

After Wincc Flex forced me to change the Highest Station Address (HSA) to 63, I lost the HMI on the bus after the download to the HMI. All parameters are exactly the same as before, except for HSA from 126 to 63.

Any idea.???

Thanks a lot Henk.

PS: did the download to the HMI via profibus first, after the download it was gone, secondally I downloaded the HW config to the CPU (network settings, highest profibus address = 63), this didn't resolve the problem

Did you cycle power ?

Yes, I did, later i checked the cable, with another hmi it picks up the node, so the cables and connectors are fine