Setting the time and date of the O3

In firmware 2.3 or later, time settings, including UTC Offset, daylight savings (DST), and time synchronizations can be configured on the O3 via BACnet or MQTT. 

Note: In firmware 2.4 or later, NTP settings are located in the DEV object. In previous versions, NTP settings can be found in the BV42 object. 

Note: Firmware 2.2 and earlier does not support time zones (UTC Offset) - if using firmware 2.2 or below, use BACnet time synchronization, as this will write the local time from other devices on the network.

There are multiple ways to manage time in an O3 Sense or O3 Edge:

• BACnet:
  • Network Time Protocol (NTP), which is enabled by default, will automatically set the device's date and time. 

If NTP is enabled manually, changes (add, remove, modify) to server addresses will not take effect until NTP is disabled and then enabled again, or after a device reset. 

• • BACnet time synchronization will be used when NTP is disabled - any time sync sent over BACnet will adjust the O3's date and time.
    • When setting the date and time, you must enable NTP on one device and set the time sync on another. Do not set both on one device, and do not enable time sync on more than one device or it will create time conflicts.
    • For more information on setting the date and time via BACnet, see the Device (DEV) Object Tasks topic in the online help: https://help.deltacontrols.com/

• MQTT: Configure the time settings using the topic 'setting/timeZoneDst'. See MQTT Setting Topics for instructions on setting the time. 
• Proviso: Proviso can push the current date and time from your mobile device (useful when no internet connection is available).

Handling Power Losses

The O3 uses a supercap to maintain its Real Time Clock (RTC) for 7 days. The supercap takes 30 minutes to fully charge.