Hello

I have a problem with dp communication.

As shown in "attached pdf file   I have consisted system, " CPU-317 2pndp, drives, and  3 pieces of Touch panel. PLC program STEP7 V5.5 SP4, HMI has made a WINCC V13 SP1.

However, whenever plug in CP5711 to DP port of im153-1 of Operation Panel OP2 , the "Touch Panel OP3" lost his communication signals. All of diplay changed to "#"

When I plug in CP5711 other place like OP1, there is no problem with dp communication.

Some suspect the reason, but I do not know the exact reason.

I tried guessing some reason.

1: Touch low supply  voltage DC22.9v

2: The connection between the DP connector is not good. (Some DP connector already tried to connect again.)
3. The hardware configuration is not the same. (only about touch panel of op3)
4: .touch communication settings problems.
5: Wincc connetion setup problems of the program.
6 .: Wincc DP properties setting wrong...

Hello,

in my opinion I don't see any problems in schema. I'm expect correct termination on connectors. What about connection to bus via that CPU connector if it's possible, will be same situation of lost communication on OP3? Asking because you said that you haven't problem from any other place to connect, but it's realy ok same connection in place of CPU S7-300?