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 this as described in the Date and Time topic in the main PLCnext Info Center.

Note: Make sure that the firewall basic configurations and the input rules on the Firewall page (SecurityFirewall) in the WBM are correct:  

Basic Configuration:

Input Rules: 


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

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



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• Published/reviewed: 2023-11-02 • Revision 011 •