Hello everybody,

I build a network with a s7-1500 with an AP Scalance w778-1 M12 comunicating with a client Scalance w738-M12. My problem is the system is comunicating in both directions with no problem but the error LED of CPU is blinking. Analysing the CPU buffer Its says that the client is not reachable or the IO system that is on client side is not reachable. But in reality everything is working fine. I'm sending you a zip file with online network view and topology view and you can see the little symbol on the client that means "not reachable".

I think I have everything well configured or there is some detail missing.

I'm using TIA V15, and the most recent firmware I have for both AP and client is v6.2 but TIA says that the Sacalances have v6.3 firmware. I already tried to search the v6.3 for TIA but It seems that don't exists even on TIA V15.1. I don't know if the problem above is correlated with this situation.

I will apreciate all of your help.

Regards,

Nuno

Hello nunpbnk,

please remove SCALANCE W from topology and connect cpu direcltly to io-system. That's why you get an error from PLC.

SCALANCE W should be "Transparent" in topology.

Pittiplatsch

Hello nunpbnk,

please remove SCALANCE W from topology and connect cpu direcltly to io-system. That's why you get an error from PLC.

SCALANCE W should be "Transparent" in topology.

Thank you very much Pittiplatsch It is OK now.