Profibus problems!

[Captinjon 0]

Hi all. I was hoping someone may be able to help with a problem i experienced this morning. I wanted to add a node to a existing profibus DP network. I opened the project via simatic manager went into the hardware config and added a new module. I then downloaded to the plc, which was stopped then restarted after download. Once the restart had finished non of the node's on the profibus network could be seen. So i reverted to the original hardware configaration and downloaded that, still the same thing no node's present. The only way that i could get the node's to be seen was to exit the hardware config and download the entire station. The PLC is a S7 318-2 Any help greatly apriciated. Many thanks

[JesperMP 2]

When changing the Profibus configuration, I often have to restart all nodes (cycle power) not just restarting the PLC.

[Captinjon 0]

I tried this aswell but still the same problems