When activate runtime on Standby OS, the runtime graphics seems completely different than master OS

Hello Shree,

There are some Limitations /Particularities in SIEMENS PCS7 Minimal configuration

Hence, SIEMENS  generally recommend creating a configuration with a separate ES and OS configurations.

Limitations/Particularities Due to the untypical  configuration of PCS 7 with only one OS, there are differences in system behavior that must be observed: • The first activated OS takes on the master role.

• For an entire download to be performed, runtime must be deactivated and the OS project closed on both computers. During this time, operator actions and archiving are not possible.

• To download changes, runtime must be stopped on the ES when compiling the OS. These can then be re-activated to test the modified OS functions. For the downloading process, runtime must be terminated and the OS Project must be closed. As a result, it is not possible to take operator actions on the ES computer during this time.

CAUTION: Depending on the changes that are carried out, if runtime remains active during OS compilation, subsequent downloading of changes may not be performed completely and will cause errors. If this happens, only an entire download is possible.

• When runtime is active on the ES computer, the runtime archives are stored in the multiproject path. At archiving, they are included in the ZIP file, which causes an increased demand on memory resources as well as longer archiving times Workaround:

– Deactivate runtime on the ES computer

– Reset the archives in the OS project on the ES computer and close the entire PCS 7 project

After archiving and re-activating runtime, the archives are synchronized again. However, it must be noted that more time is needed for synchronization.

You can refer section 6 completely in SIMATIC PCS 7 Minimal Configurations manual

Hope it helps you!