Updating IP for HMI (MP277 10" Touch) and SIMOTION D425

I need update IP for HMI (MP277 10" Touch) and SIMOTION D425.

What I did:

1) In NetPro I set new IP for D425 and HMI.

2) According to new IP WinCC Flex updated connection

3) I downloaded hw config for D425 from NetPro. New IP address assigned, CPU was in STOP state, I started CPU - so D425 started and has new IP

4) I downloaded project to HMI with new connection

5) I changed IP for HMI

But after this HMI can no establish connection with D425.

What I missed, What i did wrong?

maybe I need additionally do "Copy RAM to ROM" in SIMOTION SCOUT ?

1) RAM to ROM just allow you to keep all changes after the power off

2) better start checking the network since the beginning: can you perform both of the device with the simple PING command?

pigroplc

You better check out and enclose the connection properties in the WinCC Flex side.

pigroplc

If nothing work , then go back to Simotion and do a recompile all, then resend the HMI project...

But only if you are sure that the HMI pings at the new address.

It could be nice also to check in the "connections" of Wincc Flex that all is ok