CPU 1512SP and ET200SP Profinet connection problem

Dear All,

I have a system of CPU 1512SP-1PN (192.168.0.1) connected with 3 sets of IM155-6PN ST with IO modules (192.168.0.2, 192.168.0.3, 192.168.0.4).

1. TIA Portal "sees" all three IM155 as available devices" (pls see a picture attached)

2. But the PLC can connect via Profinet only to 192.168.0.4 and the others are unavailable via Profinet (pls see a picture attached )

All three baskets of IM155 have the same set of IO modules. Cable length between the stations is 5m (developing in the lab). TIA Portal v15 upd 4.

Could you please give an advice where the problem can be

Thank you!

_Pavel_

Dear All,

I have a system of CPU 1512SP-1PN (192.168.0.1) connected with 3 sets of IM155-6PN ST with IO modules (192.168.0.2, 192.168.0.3, 192.168.0.4).

1. TIA Portal "sees" all three IM155 as available devices" (pls see a picture attached)

2. But the PLC can connect via Profinet only to 192.168.0.4 and the others are unavailable via Profinet (pls see a picture attached )

All three baskets of IM155 have the same set of IO modules. Cable length between the stations is 5m (developing in the lab). TIA Portal v15 upd 4.

Could you please give an advice where the problem can be

Thank you!

 How is the network built? Do you have topology set up? What errors do you have in the PLC diagnostics buffer? Are the Profinet Names set correctly to the IM's?

Dear Hati,

your advise has helped, thank you.

_Pavel_

Dear Hati,

your advise has helped, thank you.

 Would you care to share what the problem was?