Carrier Equipment Touch Installation And Setup Manual page 16

What is the Equipment Touch?
Screen name
Time Master
Equipment Touch
Installation and Setup Guide
Description
If the Equipment Touch is serving as the front-end for your system, you should designate a
controller to be the BACnet Time Master. If a controller will be the BACnet Time Master, this
screen lets you configure how it sends time synchronization broadcasts.
Time Sync Mode - Tap in the number below that represents your selection:
•
0 = No Broadcast - The controller will not act as Time Master.
•
1 = Local Broadcast - If it doesn't already exist, a BACnet address with network number
and MAC address length both set to zero is added to the controller's Time
Synchronization Recipients list found on the driver's Device page in the i-Vu®
interface. The controller will then send time broadcasts only to controllers on its
ARCnet or MS/TP network.
• 2 = Global Broadcast - If it doesn't already exist, a global address with network number
set to 65535 and MAC address length set to zero is added to the controller's Time
Synchronization Recipients list found on the driver's Device page in the i-Vu®
interface. The controller will then send time broadcasts to all its connected networks.
Time Sync Interval - Enter how often local or global time broadcast should be sent (1-9999
minutes). If Time Sync Interval is set to zero, no time sync messages are sent.
NOTE If the controller looks through its Time Synchronization Recipient List and finds an
entry with MAC address length set to zero and network number set to 65535, the
controller's BACnet Time Master mode is set for Global Broadcast. If there is no global
broadcast entry in the recipient list, the controller then looks for a local broadcast address
(MAC address length set to zero and network number set to zero or to the same network
number as the module's). If such an entry is found, the BACnet Time Master mode is set for
Local Broadcast. Otherwise, the mode defaults to Disabled/None.
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