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Download WinCC/Options for Process Control - Service, Support
Transcript
Time Synchronization 4.6 Simultaneous use of Time Synchronization over System Bus and Local Area Network Note If the WinCC servers belong to a Windows domain and a specialized device, such as Siclock, operates as the time master on the system bus, the Siclock and the domain must have the same time. We recommend equipping both with an external time receiver. Synchronization via system bus is not allowed if the "Use the time from a connected WinCC server" check box is activated. This is because it makes no sense to import the time from a server connected to the system bus and then to send this time back to the system bus. WinCC/Options for Process Control System Manual, 02/2013, A5E32315704-AA 179
