Re: [Bacnet-developers] Utilizing bacts across BACNet

[Steve K. <st...@ka...>]

Hi Andrew,

> I'm trying to find a way to link the time displayed on all the multi-split
> thermostats in our BACNet through using the bacts command. How do I go about
> doing this?
>
> Based on the EPICS I pulled network, I don't see any objects I can assign a
> date/time to. Is this doable?

You might be able to read the time from each device using the
Local_Date (56) and Local_Time (57) in the Device object (8).  As for
writing the time, currently the only standard method is
TimeSynchronization request (UTC or Local).  Perhaps some vendors
permit writing to the Local_Date (56) and Local_Time (57) properties.

Note that the bacts example application simply grabs the time from the
PC, and broadcasts a TimeSynchronization to the network.  It could be
enhanced to send a unicast directly to a specific device, or even send
alternate times or even send UTCTimeSynchronization  request, but that
has not been done yet.

Best Regards,

Steve