E-DLT Loosing Date and Time

Discussion in 'C-Bus Wired Hardware' started by CBUSystem, Apr 8, 2024.

  1. CBUSystem

    CBUSystem

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    Hi,

    I have a selection of EDLT’s on a network and after an indeterminate period of time the Time and Date displayed on them reverts to a random/Factory level date and time.

    It is about 4 days with the date and time set correctly then the date and time reverts to a random date and time.

    The network is comprised of input EDLTS and then Relay, Dimmer and Shutter outputs.

    Would there be a reason that the time / date would fall off track for no reason?

    I have no module that produces or maintains an NTP source, but I would have thought that setting the time in the tools menu would have sufficed.

    However I could be wrong.

    Thanks,
     
    CBUSystem, Apr 8, 2024
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  2. CBUSystem

    Wonkey

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    The most obvious reason would be loss of power on the C-Bus network,
     
    Wonkey, Apr 9, 2024
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  3. CBUSystem

    CBUSystem

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    Yes no obvious Loss of power as other devices and lighting was unaffected but monitoring it for future occurrences. Cheers.
     
    CBUSystem, Apr 14, 2024
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  4. CBUSystem

    Wonkey

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    A short power interruption would cause this, C-Bus would return to its previous state, unless programmed to do otherwise.
    You could program a spare channel to return to ON after power failure.
     
    Wonkey, Apr 15, 2024
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  5. CBUSystem

    oracle

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    connect up to it with your PC and run run cbus diagnostic utility capture the logs to help identify the issue. but as above? if you have no device - like touchscreen, paca, Shac, wiser etc. they would typically send a clock and timekeeping signal intermittantly to keep these things in check.
     
    oracle, Apr 18, 2024
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  6. CBUSystem

    NickD Moderator

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    The eDLT doesn't have a battery backup or a real-time clock, and if you don't have a controller or other device on the network that does, then the eDLT is the only thing keeping time, and you will lose the setting if the bus power drops out, and you will also see a lot of drift.

    It's not really intended to work the way you have it.. adding a PAC would at least give you a time master with a RTC with battery backup, but you will still see some drift in the time. A Wiser2 or Automation Controller will give you NTP.
     
    NickD, May 10, 2024
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