VRF Protocol Gateway
22
8.2.2 Table of BACnet Protocol Point
One BACnet object ID is consist of the following 5 parts:
BACnet object ID
（
32bits
）
10 bits
3 bits
2 bits
9 bits
8 bits
Reserved
Model series
(assigned to be
0)(M)
Equipment
type(01,02,03)(D)
Equipment
migration(N)
Parameter
No.(P)
Equipment type:
include the gateway itself (0), IDU (1), ODU (2) and IO
module (3).
Equipment migration:
for IDU object, it means the IDU No.;
Parameter number:
the sequence of parameter number after data conversion;
ID value of BACnet object:
BACnet ID = P+N*256+D*256*512+M*256*512*4;
For example indoor ambient temperature of object
（
IndoorUnitAmbientTemp_01_01_01
）
, its BACnet object ID is
（
IndoorUnitAmbientTemp_01_01_01
）
with the following meaning:
BACnet object ID(32bits)
10 bits
3 bits
2 bits
9 bits
8 bits
Reserved
Model series
(assigned to be
0)(M)
Equipment
type(01,02,03)(D)
Equipment
migration(N)
Parameter
No.(P)
0
0
：
Multi VRF
1:IDU
1
1
If the value of initial IDU engineering code object
(FirstIndoorUnitNum_01_00_00 with object ID of 1) of this Gateway is M, then
IndoorUnitAmbientTemp_01_01_01
（
131329
）
represents a IDU parameter with the
engineering code of (M+1).
