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PLCnext as Time Server

asierasier
in PLCnext Technology & PLCnext Controls

Good morning,

We have a network with an AXC F 1152 and several ILCs. None of them has access to internet.

Is it possible to use the AXC F 1152 as a time server for the ILCs, so all of them have the same time?

Thanks in advance.

Best regards.

Comments

  • Martin PLCnext TeamMartin PLCnext Team
    edited December 2024

    The AXC F 1152 runs ntpd, so it should be possible to add entries like this to /etc/ntp.conf:

    # Allow LAN machines to synchronize with this ntp server
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
restrict 192.168.2.0 mask 255.255.255.0 nomodify notrap
# You may add as many (or few) CIDR address blocks to allow to synchronize with your machine as you'd like.

    This is not specific to PLCnext Control devices, but rather a general ntpd configuration option, so general advice about ntp configuration for any platform should also apply here.

    Note:

    • it's generally not recommended to manually change system files like this, but you're welcome to try.
    • any changes to this file will be undone by a Type 1 or a Type 2 reset.
    • firmware versions 2025.0 and later will not include ntpd (in case you ever upgrade the firmware).


  • andreasroithervoigtandreasroithervoigt

    Hello @Marti , I would be interested to understand the reason why FW V > 2025.1 will not include ntpd anymore? Thanks in advance.

  • Martin PLCnext TeamMartin PLCnext Team

    Hello. The PLCnext Technology Info Center gives this explanation:

    https://www.plcnext.help/Changes_2025_part_2.htm


    image.png


    In summary: The functions currently provided by ntpd will be provided by chrony in the future.

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