TB3 SERIES COMMUNICATING THERMOSTATS INSTALLATION INSTRUCTIONS
31-00576-01 14
(a)
Only valid for TB3240x model.
BACnet Parameters
Based on BACnet standard MS/TP port configurations are given below;
8, n, 1 (8 Data Bits, No Parity, 1 Stop Bit)
NOTE:
• The MAC address and Loop ID can be changed via configuration menu.
NOTE:
• Device Instance Number (Device ID) is automatically calculated as below.
Device ID = (17 * 100000) + (Loop ID * 1000) + MAC
For example: Loop ID: 1 and MAC: 1 => Device ID = (17 * 100000) + (1 * 1000) + 1 = 1701001
When the MAC address or Loop ID is changed via the configuration menu, the Device ID is automatically
recalculated to avoid network ID conflict.
The device ID value is writable via BACnet and ranges from 0 to 4194302 as a property of the device object. Once the
Device ID is changed via BACnet, the automatic calculation mentioned above is ineffective. To activate the Device ID
automatic calculation again, the device should be factory reset.
Device limit
The RS485 data-link, as a bus topology, requires proper wire type, biasing, and termination to function properly. A
maximum of 30 devices is recommended.
P47 MAC Address Range: 001 to 127 1
P48 Startup Waiting Time Range: 0 to 300 60
Parameter Range Default
MAC Address 1 to 127 1
Loop Number 0 to 99 0
Baudrate 9600, 19200, 38400, 76800 76800
NO NAME OF PARAMETER PARAMETER DEFINITION
FACTORY
DEFAULT
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