Seeking Advice on Time Synchronization

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Hello dear HMI friends, do you have an idea?   I have three Windows PCs.   One is Unified Server and the other two are Unified Clients. Version is Unified V19.   How to synchronize the time of the three PCs?   An S7-1500 is also in the machine. Can the PLC-time also be synchronized with the PCs?   Are there options for time synchronization?
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1 answers
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Hello. You do have a few options for Time Sync for your devices on the same/accessible network.

 

Case#1 - One way of accomplishing what you are asking for is to set each Hardware's NTP server to the same source (eg. time.windows.com/time.nist.gov):

  1. Follow this Application Example to configure each PC's NTP server to the same source. 
  2. Set your PLC's NTP client configuration: image.png
    1. ***Some things to take in to consideration to successfully implement this: 
      1. CPU and Router need to be in the same IP subnet
      2. CPU must be parameterized with a DNS server and a router
      3. On the router, the NTP traffic of the SMIATIC S7 station must be allowed to pass the firewall.

Another way is to use one of the hardware as a NTP Server to the remainder of the devices (aka NTP Clients). To accomplish this you can follow these steps: 

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