Viconics VTR7300 BACnet Integration Manual - Manual (Page 28)

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Table 2 shows the different possibilities with the Status LED behaviour for a BACnet module.
Condition of the Status LED Possible Cause Solution

BACnet communication NOT active
at default MAC address = 254 Change MAC address to
another value from 0 to 127
 1 short blink A VT7600 BACnet module has
been installed on a VT7300
thermostat
Install a VT7300 BACnet
module on the thermostat
A VT7300 module has been
installed on a VT7600 thermostat Install the BACnet module on
a VT7300 thermostat model
 2 short blink (no wires
connected to the module)
The right module has been installed
on the right thermostat model
N/A
 2 short blink (wires
connected to the module)
Module is not at the same baud
rate as the network Power off and on the
thermostat
 2 short blinks and a longer
blink (wires connected to
the module)
The module has detected the
presence of a network
N/A
 Right after power is
applied: 2 long blinks and
then no blinking
Polarity has been reversed at the
module Reverse polarity at the
module
Table 2: Status LED condition and possible solutions
Default Device Name and default Device ID
Default Device Name is set to: Model number
– MAC:
 Where MAC is the current MAC address of the device.
 Where Model number is Viconics part number.
The device name will be upgraded as soon as there is a change to the device MAC address.
The Device Name and Device ID properties are writable in Viconics’ device object. Both properties can be
renamed from any BACnet network management tool as long as the tool itself can write to these properties.
VT7200X Models
Default Device ID is set to: 72000 + MAC
 Where MAC is the current MAC address of the device.
The device ID will also be upgraded as soon as there is a change to the device’s MAC.
For example, when a VT7200F5000B thermostat with a MAC address of 41 is connected to a network, its
default Device Name will be VT7200F5x00B-41 and its default Device ID will be 72041.
VT73xxX Models
Default Device ID is set to: 73000 + MAC
 Where MAC is the current MAC address of the device.
The device ID will also be upgraded as soon as there is a change to the device’s MAC.
For example, when a VT7300C5000B thermostat with a MAC address of 63 is connected to a network, its
default Device Name will be VT7300C5x00B-63 and its default Device ID will be 73063.