Gree MG30-24/D1(B) - Page 47

BACnet Gateway Kit for Central Air Conditioners
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3.3 Detailed Descriptions of BACnet Objects
For each communication status, objects related to the unit are treated on the BANnet as
follows:
(1) It is known from the BACnet gateway topology that the BACnet objects related to the
units include those about the GMV outdoor unit and GMV indoor unit. As for the GMV water
heater unit, BACnet objects also include those about the water tank and oor heating device
additionally.
(2) Indoor unit general error mark
Member number:1
Object name:IndoorUnitErrorMark_XX_YYY_ZZ (XX means Air condition type,like GMV is
01;YYY means Outdoor Units's number,like GMV is between 001 and 004 now;ZZ means Indoor
Units's number,like GMV is between 01 and 16 now,otherwise 00 means deviceYYY's Parameters.)
Object type:Binary output
Object ID: BI(3)+YYY*8192+ZZ*64+1
Instance Number: YYY*8192+ZZ*64+1
Description: this object is used to monitor the general error of the indoor unit.
Present_Value:
ACTIVE:with
INACTIVE:without
Note :
1) When some error occurs to any one of the indoor unit, Present_Value property will turn to
ACTIVE and raise an alarm.
2) Present_Value property is defaulted to be INACTIVE.
(3) Indoor unit error code
Member number:2
Object name:IndoorUnitErrorCode_XX_YYY_ZZ (XX means Air condition type,like GMV is
01;YYY means Outdoor Units's number,like GMV is between 001 and 004 now;ZZ means Indoor
Units's number,like GMV is between 01 and 16 now,otherwise 00 means deviceYYY's Parameters.)
Object type:Multistate Input
Object ID: MI(13)+YYY*8192+ZZ*64+1
Instance Number: YYY*8192+ZZ*64+1
Description: this object is used to monitor the error code of the indoor unit. For more details see
Appendix C�
Present_Value:
0x00000000-0x000003FF (See Appendix C)
Notes:
1) When some error occurs to the indoor unit, Present_Value property will produce a decimal
numerial� For more details see Appendix C�
2) Multiple error may concur. Each error has a independent error code, e.g. 0x00000008 for
“Outlet Tube Temp Sensor Error”,0x00000010 for “Inlet Tube Temp Sensor Error”. When these
errors just happen together, Present_Value property will be 24 (conversion method: 0x00000008
plus 0x00000010 is 0x00000018, that is equal to the decimal numeral 24).