Configuring the system time 

Centralized security logging only makes sense if all devices have a synchronized time. NTP is already supported today. TimeServer provides all devices with the same time base. For each device you have to configure which time server it should use.

Use the corresponding WBM page for NTP client configuration.

• Log in to the WBM. 

  Return to topicHow do I get to the WBM again? Click here for more information... 

  Establishing a connection to the Web-based Management (WBM):

  • Open a web browser on your computer.
  • In the address field, enter the URL https://<IP-address-of-the-controller>/wbm,
    for example: https://192.168.1.10/wbm.

  For further information, see WBM.

• Open the Date & Time page (Configuration → Date & Time). 

• To add a new NTP server entry, click the button.
   
  ↪ A new window opens.

• Provide the following information: 
  • Server hostname: IP address of the NTP server
  • Status: Active
  • Min. polling time: The shortest interval at which the NTP client retrieves the current time from the NTP server.
  • Max. polling time: The longest interval at which the NTP client retrieves the current time from the NTP server.
  • Note: The relationship between the minimum and maximum polling time is that together they determine the frequency of the time queries. The NTP client dynamically adjusts the polling intervals within these limits based on the stability and accuracy of the time source and the network conditions. 

Basic Configuration:

Input Rules: 

For information on how to set the system time, refer to the System time topic in the main PLCnext Technology ‑ Info Center.

There are some parameters to be set, e.g. what deviation from the time is acceptable, the maximum unavailability, etc.