Hi 

I have done programming and adjusting HMI screen with PCS7-v9.0-SP3 and WinCC-v7.4.

In the control system I have 2 CPU 414-5H (redundant CPUs) and as usual I prepared screens for one os (OS1). At final I copied OS1 and paste it in the control system, so now I have 2 OS. (OS1 and OS2)

I have a problem connecting the OSes to the CPUs.

In Netpro I have 2 PC station with it's CP1623 (different IPs) and it's Wincc appl. (each wincc appl has it's own connection to CPUs).

When I want to download pc stations from Netpro to CPUs, at first I download wincc appl connection. 

(they download with no problem and no "replace the previous data on CPUs" alarm), but when I want download CP1623 or PC station from Netpro they download with alarm ("replace the previous data on CPUs" alarm). finally when I activate runtime the OS which the last download has taken place from it will go online and the other one will be disconnected.

I tried several tests and always the result is the same. I really have problem doing this ............

Please can somebody tell how should be the Netpro config for each OS (or any other config I have missed) to connect both OSes to H-CPUs simultaneously.

Thanks 

Regards

Ali

Hello Ali,

See if the ressources proposd in this discussion provide guidance on your problem:

https://support.industry.siemens.com/tf/ww/en/posts/single-station-or-multi-station/259771

Hope this helps,

Daniel Chartier