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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:
10 bits
Reserved
0
If the value of initial IDU engineering code object.
(FirstIndoorUnitNum_01_00_00 with object ID of 1) of this BACnet gateway is
M, then IndoorUnitAmbientTemp_01_01_01(131329)represents a IDU parameter
with the engineering code of (M+1).
Notice: for unit(RS485 Bus), equipment type 1 is the unit, 2 is for reservation.
BACnet object ID(32bits)
3 bits
Model series
(assigned to be
type(01,02,03)(D)
0)(M)
0:Multi VRF
2 bits
Equipment
Equipment
migration(N)
1:IDU
19
BACnet Gateway
9 bits
8 bits
Parameter
No.(P)
1
1
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