Carrier Connect 33CONNECTSTAT43FX - Page 45

Using installer settings
Carrier Connect™ Wi-Fi Thermostat 33CONNECTSTAT43FX CARRIER CORPORATION ©2021
Installation Guide All rights reserved
41
Setting
Default/Range
MSTP MAC—Set the BACnet MS/TP MAC addresses for master devices. Each BACnet
MS/TP device on a MS/TP segment, must have a unique MAC address. Performance
gains can be made on a BACnet MS/TP network by not leaving any gaps in MAC
addresses, eliminating the need for each device to continuously check the addresses
above its address and up to the next known device for new devices. Although the BACnet
standard does not limit the use of MAC address zero, it is often reserved for an MS/TP
router.
NOTES
• Changing the MS/TP baud rate requires the thermostat to be restarted. When the
installer exits the configuration settings after making changes to the BACnet
settings, there is a prompt to either cancel those settings or save the new settings,
which forces a thermostat reset.
• The MSTP MAC is set to a value less than or equal to the MSTP Max Master setting.
This setting is not displayed if BACnet is disabled.
D:
R:
1
0-127
(increments of 1)
BACNET UTC OFFSET—Specify a UTC offset to be set from -13 to +13 hours in increments
of 15 minutes.
When a BACnet UTC Time synchronization message is received by the device, the value
in UTC Offset is subtracted from the UTC Time to determine the local standard time. The
Daylight Saving time logic is then applied to the standard time to get the local time with
Daylight Saving.
NOTE For reception of the UTC Time synchronization service to be enabled (and UTC
offset used) on the device, the SYNCH TIME TO SERVER option has to be set to NO and
DST must be set to ENABLED.
This setting is not displayed if BACnet is disabled.
D:
R:
5:00 (5 hours 0 minutes)
-13:00 to 13:00
(15 minute increments)
DEVICE ID—Specify a Device ID from 0 to 4194302. The Device ID can also be updated
over BACnet when the BACNET CONFIG WRITE configuration is set to YES.
Device IDs on BACnet devices must not only be unique on MS/TP segment like the MAC
address, but must also be unique internetwork-wide. Each device broadcasts its Device
ID using the I-Am service upon power up and in response to the Who-Is service. Changing
the Device ID triggers a new I-Am message to be sent including the new Device ID.
The top line in this screen scrolls to display the DEVICE ID and the ID value.
The SELECT button changes the screen to the Device ID editor. Initially the first non-zero
is flashing, indicating that it can be changed by the up and down arrows. There are left
and right arrows in the middle row of the screen that can be pressed to move the cursor
left and right to change each digit individually. Changing the Device ID triggers an I-Am
message to be sent over BACnet and will increment the Database Revision property in
the Device object.
This setting is not displayed if BACnet is disabled.
D:
R:
16xxxx where xxxx is the
last four digits of the
thermostat serial number.
0 to 4,194,302
(increments of 1)