Please, I need help with this situation. In the project I have about 40 profinet devices that control ET200SP-F new model SM03 with Firmware 4.0, the project is V20.

At the moment, i have only one of these devices physically in the network. To which i am able to connect, ping is OK, web server works. Profinet names are OK, IP addresses are OK.

In the HW configuration, however, it behaves like this, if I leave only the PLC and this technology, the connection is established. If i add a few more technologies to the network (in the HW configuration), i upload to the PLC, it still holds the connection. But at a certain moment, when i add more, PROFINET stops working and the module is unreachable. Or, if in a state where PROFINET communication is working, i remove the module from the network (in the HW configuration) and add it again to the network with the PLC, i do not make any other changes, i upload to the PLC, then PROFINET stops working. I remind you, only the PLC and the given technology are physically connected to the network and i make these changes only in the HW configuration.

I am not defining the topology.

Thank you