The system calendar feature can allow you to synchronize the time clocks on all the controllers on the system at a certain time of day. This will ensure there is no clock-drift between the PC and the hardware:

Setup Instructions

1. Click the System Calendar icon in the UI ribbon bar.
   
   
   
   
2. Click the 'New Appointment' button.
3. Enter a name for the appointment in the subject text field, then save.
   
   
   
   
4. Enter a start time for the time sync to happen. The date defaults to today's date. A default end time is also created and this does not need to be altered.
5. Click on the categories tab and select 'Synchronize Clocks.
   
   
   
   
6. You can also change the color scheme of the appointment so that it can be easily distinguishable against other appointments that may appear in the System Calendar window. There are also options for font attributes.
7. Click Save and Close. Then click the Save All icon in the top left corner of the Doors.NET user interface.
8. At the specified start time a Synchronize Clock command will be sent out to all the controllers online to the system. Including multiple gateways.

Note: As with clicking the Synchronize Clocks icon in the UI ribbon bar there is no event generated in Live Events when the synchronize clock command is set out.