BACnet Gateway Kit for Central Air Conditioners
27
3�2 BACnet Point List
A BACnet Object Identifier value shall consist of two components: Object Type and Instance
Number. The BACnet object uses the data field of the instance number 22 as shown below.
(High)70
70
70
70
(Low)
Object Type (Bits
)
Instance (22 Bits)
)
XX
YYY
ZZ
①
Bits for the same type object type of
each air conditioning unit
1Bit
7Bit
6Bit
②
Bits for the indoor unit number
8Bit
③
Bits for the outdoor unit number
④
Always
“
1
”
for the VRF units.
The detailed object is explicated as below (table 3.2.1 and table 3.2.2 are two parts of the
whole point list)
Notes:
1) A object name includes XX_YYY_ZZ, and following each parameter represents the air
conditioning unit number. Wherein, XX means Air condition type, like GMV is 01;YYY means
Outdoor Unit's number, like GMV is between 001 and 004 now(this means the communication
module’s address); ZZ means Indoor Unit's number, like GMV is between 01 and 16 now, otherwise
00 means device YYY's Parameters.
For instance:
IndoorUnitModeCommand_01_001_01: On/ Off setting of the GMV outdoor unit 1 and indoor
unit 1�
IndoorUnitModeCommand_01_001_16: On/Off setting point of the GMV outdoor unit 1 and
indoor unit16�
OutdoorUnitErrorMark_01_001_00: General error of the GMV outdoor unit.
WaterTankModeCommand_01_004_00: Want tank mode setting of the GMV outdoor unit 4,
only applicable to the unit which can functions as the water heater.
2) See Appendix C, Appendix D, Append E and Appendix F for more details about alarm codes
and shield mark.
3) GMV water heater includes both the specific parameters of GMV water heater and
parameters of GMV outdoor units.
4) Parameters marked with* are only for the multi GMV water heater with floor heating function.