Dunham Bush Centrifugal Chiller - Dunham Bush Centrifugal Chiller Modbus / BACnet High-Level Interface Mapping : (Fujitsu) General Australia and New Zealand

GENERAL AIRSTAGE TECHNICAL REFERENCE

Dunham Bush Centrifugal Chiller

Modbus / BACnet High-Level Interface Mapping

Searchable reference for BMS integration, commissioning and fault interpretation. Addresses and scale factors are reproduced from mapping document version 2024-09-15.

Type codes: D = Digital, A = Analogue, I = Integer.
R/W: R = Read only; R/W = Read and write.
* Design dependent - refer to the unit wiring diagram.
** Optional add-on - refer to the unit wiring diagram.
*** BACnet extended setup is required.
Alarm severity: superscript 1 = critical alarm; superscript 2 = warning alarm.

Modbus / BACnet Point Mapping

Modbus Address	BACnet Address***	TYPE	R/W	Unit	Scale	DESCRIPTION
DIGITAL READING-UNITS
10002	100001	D	R	-	-	Remote Start/Stop Status
10003	100002	D	R	-	-	Local Start/Stop Status
10004	100003	D	R	-	-	Chilled Water Flow Status
10005	100004	D	R	-	-	Condenser Water Flow Status
10007	100006	D	R	-	-	Remote Start High Level Status*
10008	100007	D	R	-	-	Local Start High Level Status*
10009	100008	D	R	-	-	Off High Level Status*
10092	100091	D	R	-	-	Critical Alarm ON
10093	100092	D	R	-	-	Chilled Water Pump ON
10094	100093	D	R	-	-	Condenser Water Pump ON
10095	100094	D	R	-	-	Cooling Tower ON
10131	100130	D	R	-	-	Unit Critical Alarm
10181	100180	D	R	-	-	DBLAN Present (Option - Applicable to Master/Slave Only)
10182	100181	D	R	-	-	DBLAN Unit 1 Present (Option - Applicable to Master/Slave Only)
10183	100182	D	R	-	-	DBLAN Unit 2 Present (Option - Applicable to Master/Slave Only)
10184	100183	D	R	-	-	DBLAN Unit 3 Present (Option - Applicable to Master/Slave Only)
10185	100184	D	R	-	-	DBLAN Unit 4 Present (Option - Applicable to Master/Slave Only)
10186	100185	D	R	-	-	DBLAN Unit 5 Present (Option - Applicable to Master/Slave Only)
10187	100186	D	R	-	-	DBLAN Unit 6 Present (Option - Applicable to Master/Slave Only)
10188	100187	D	R	-	-	DBLAN Unit 7 Present (Option - Applicable to Master/Slave Only)
10189	100188	D	R	-	-	DBLAN Unit 8 Present (Option - Applicable to Master/Slave Only)
10190	100189	D	R	-	-	DBLAN Start Next Unit (Option - Applicable to Master/Slave Only)
10194	100193	D	R/W	-	-	BMS Remote Start/Stop Command
10195	100194	D	R/W	-	-	Reset Alarm
10197	100196	D	R	-	-	Unit of Measurement - Temperature (0-Fahrenheit; 1-Centigrade)
10198	100197	D	R	-	-	Unit of Measurement - Pressure (0-psi; 1-Bar)
DIGITAL READING-COMPRESSOR 1
10021	100020	D	R	-	-	Compressor 1 Run Status
11116	101115	D	R	-	-	Compressor 1 Fault
10023	100022	D	R	-	-	Compressor 1 Online
10047	100046	D	R	-	-	Compressor 1 Interlock
10097	100096	D	R	-	-	Compressor 1 Vapor Injection Solenoid ON*
ANALOG READING-UNITS
40002	100001	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature
40003	100002	A	R	oC or oF	x 0.1	Entering Chilled Water Temperature
40004	100003	A	R	oC or oF	x 0.1	Leaving Condenser Water Temperature
40005	100004	A	R	oC or oF	x 0.1	Entering Condenser Water Temperature
40058	100057	A	R	PSI or BAR	x 0.1	System 1 Cooler Pressure
40133	100132	A	R	PSI or BAR	x 0.1	System 1 Condenser Pressure
40010	100009	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature Reset (Optional Add-On - Chilled Water Reset + Demand Limit)
40995	100994	A	R/W	oC or oF	x 0.1	Leaving Chilled Water Temperature Written Setpoint (Optional Add-On - Chilled Water Reset + Demand Limit; Touchscreen Controlable)
40011	100010	A	R	%	x 0.1	Demand Limit (Optional Add-On - Chilled Water Reset + Demand Limit)
40994	100993	A	R/W	%	x 0.1	Demand Limit Written Setpoint (Optional Add-On - Chilled Water Reset + Demand Limit; Touchscreen Controlable)
40019	100018	A	R	oC or oF	x 0.1	Cooler Approach
40021	100020	A	R	oC or oF	x 0.1	Condenser Approach
40093	100092	A	R	%	x 0.1	Liquid Line In Valve Opening %
40107	100106	A	R	%	x 0.1	Liquid Line 2 In Valve Opening % **
40280	100279	A	R	%	x 0.1	Liquid Line Out Valve Opening % **
40362	100361	A	R	%	x 0.1	Liquid Line 2 Out Valve Opening % **
41049	101048	A	R	%	x 0.1	HGBP Valve Opening % **
40076	100075	A	R	PSI or BAR	x 0.1	Liquid Line Pressure**
40079	100078	A	R	oC or oF	x 0.1	Liquid Line Temperature**
40085	100084	A	R	oC or oF	x 0.1	Liquid Line Subcool**
40131	100130	A	R	oC or oF	x 0.1	Leaving Chilled Water Control Target
40153	100152	A	R	%	x 0.1	Unit Capacity
40154	100153	A	R	%	x 0.1	Stop Next Capacity (Option - Applicable to Master/Slave Only)
40191	100190	A	R/W	oC or oF	x 0.1	Leaving Chilled Water Temperature Control Setpoint (Cooling Mode Application)
40192	100191	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature Deadband Positive
40193	100192	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature Deadband Negative
40194	100193	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature Deadband Restart
40195	100194	A	R	oC or oF	x 0.1	Leaving Chilled Water Temperature Deadband Stop Unit
ANALOG READING-COMPRESSOR 1
40012	100011	A	R	PSI or BAR	x 0.1	Compressor 1 Suction Pressure
40366	100365	A	R	oC or oF	x 0.1	Compressor 1 Suction Temperature
40015	100014	A	R	PSI or BAR	x 0.1	Compressor 1 Discharge Pressure
40034	100033	A	R	oC or oF	x 0.1	Compressor 1 Discharge Temperature
40385	100384	A	R	kW	x 0.1	Compressor 1 Actual Power
40032	100031	A	R	Ampere	x 1.0	Compressor 1 3-Phase Running Amps
40147	100146	A	R	%	x 0.1	Compressor 1 Capacity
40863	100862	A	R	%	x 0.1	Compressor 1 Stage Valve Opening % *
40516	100515	A	R	%	x 0.1	Compressor 1 Vapor Injection Opening % *
INTEGER READING-UNITS
45005	200003	I	R	-	x 1.0	Number of Unit Running in DBLAN (Option - Applicable to Master/Slave Only)
45954	200952	I	R/W	-	x 1.0	Remote/Off/Local High Level Control* 0 = Off 1 = Remote 2 = Local
45008	200006	I	R	sec	x 1.0	Unit Target Response
45010	200008	I	R	-	x 1.0	System Status (See Table 4 details)
45013	200011	I	R	sec	x 1.0	Next Compressor Turn On Delay
45014	200012	I	R	sec	x 1.0	1st Compressor Turn On Delay
45049	200047	I	R	-	x 1.0	DBLAN Unit No. (Option - Applicable to Master/Slave Only)
45052	200050	I	R	-	x 1.0	Lead Compressor
INTEGER READING-SYSTEM 1
45006	200004	I	R	-	x 1.0	System 1 Liquid Line Status (See Table 2 details)(Applicable to DCLCD/DCLCD-V with Economizer Only)
45050	200048	I	R	sec	x 1.0	System 1 Liquid Line Response (Applicable to DCLCD/DCLCD-V with Economizer Only)
INTEGER READING-COMPRESSOR 1
45003	200001	I	R	-	x 1.0	Compressor 1 Status 1 (See Table 1 details)
45011	200009	I	R	-	x 1.0	Compressor 1 Status 2 (See Table 3 details)
45012	200010	I	R	sec	x 1.0	Compressor 1 Off Cycle Delay
45018	200016	I	R	hours	x 1.0	Compressor 1 Run Hour (Daily)
45019	200017	I	R	hoursx1000	x 1.0	Compressor 1 Run Hour (Totalx1000) (See Note 1)
45020	200018	I	R	hours	x 1.0	Compressor 1 Run Hour (Total) (See Note 1)
45021	200019	I	R	-	x 1.0	No. of Compressor 1 runnning cycle (Daily)
45022	200020	I	R	-	x 1.0	No. of Compressor 1 runnning cycle (Total)
45023	200021	I	R	month	x 1.0	Compressor 1 Last ON Time (month)
45024	200022	I	R	day	x 1.0	Compressor 1 Last ON Time (day)
45025	200023	I	R	hours	x 1.0	Compressor 1 Last ON Time (hours)
45026	200024	I	R	minutes	x 1.0	Compressor 1 Last ON Time (minutes)
45027	200025	I	R	month	x 1.0	Compressor 1 Last OFF Time (month)
45028	200026	I	R	day	x 1.0	Compressor 1 Last OFF Time (day)
45029	200027	I	R	hours	x 1.0	Compressor 1 Last OFF Time (hours)
45030	200028	I	R	minutes	x 1.0	Compressor 1 Last OFF Time (minutes)

Factory Communication Settings

BACnet MS/TP Factory Setup
BACnet TCP/IP / Modbus TCP/IP Factory Setup
Modbus RTU Factory Setup
Data bits / Stop bits / Parity	8 / 2 / None
Baud rate / ID address	19200 / 1
Device ID range	77001 to 77999
Modbus TCP/IP addresses	172.16.0.1 to 172.16.0.999
Subnet	255.255.0.0
Device ID range	77001 to 77999
MS/TP ID range	1 to 999 (document also lists 1 to 1000)
Max master / Baud rate	127 / 38400

Run-hour calculation: Compressor total running hours = (Total x1000 register x 1000) + Total register.

Integer Status Value Tables

Table 1 - Compressor Operation Status

Integer Value	Description
0	Off
1	On-Hold
2	On-Unload
3	On-Load
4	Alarm
5	Opening EEV
6	Switch off
7	Low LVG CHW restart temperature

Table 4 - System Status

Integer Value	Description
0	Off by Config
1	On
2	Off-R/O/L Input
3	Off-No CHW Flow
4	Off-No Stop
5	Off-On/Off Schedule
6	Off-High Level Control
7	Off-PCR trip
8	Powerup Delay
9	Off-DBLan Network Control
10	-
11	Off-No CDW Flow
12	Off-Ref. leak warmup delay

Table 3 - Compressor Status 2

Integer Value	Description
0	Ok
1	Hold-Pressure
2	Unload-Pressure
3	Hold-Amp
4	Unload-Amp
5	-
6	Ramp

Table 2 - Liquid Line Status

Integer Value	Description
0	Off
1	Hold-Normal
2	Open-Normal
3	Close-Normal
4	EEV Slove Over
5	Open-High Approach
6	Close-Low Approach
7	Close-High Approach Ext.
8	Open-Hold Low Pressure
9	Close-Unload Capacity %
10	Open-Load Capacity %
11	Open - Low pressure unload
12	Open - during Off HGBP

Alarm Trigger Registers

Modbus Address	BACnet Address	TYPE	R/W	Unit	Scale	DESCRIPTION
INTEGER READING-UNITS
45180	200178	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 1 details)
45181	200179	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 2 details)
INTEGER READING-SYSTEM 1
45183	200181	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 3 details)
45951	200949	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 8 details)
INTEGER READING-COMPRESSOR 1
45186	200184	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 4 details)
45083	200081	I	R		x 1.0	Alarm Trigger (See Alarm Table 5 details)
45078	200076	I	R		x 1.0	Alarm Trigger (See Alarm Table 6 details)
45077	200075	I	R		x 1.0	Alarm Trigger (See Alarm Table 7 details)
INTEGER READING-COMPRESSOR 2
45188	200186	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 4 details)
45084	200082	I	R		x 1.0	Alarm Trigger (See Alarm Table 5 details)
45079	200077	I	R		x 1.0	Alarm Trigger (See Alarm Table 6 details)
45080	200078	I	R		x 1.0	Alarm Trigger (See Alarm Table 7 details)
INTEGER READING-COMPRESSOR 3
45190	200188	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 4 details)
45085	200083	I	R		x 1.0	Alarm Trigger (See Alarm Table 5 details)
45081	200079	I	R		x 1.0	Alarm Trigger (See Alarm Table 6 details)
45082	200080	I	R		x 1.0	Alarm Trigger (See Alarm Table 7 details)
INTEGER READING-COMPRESSOR 4
45564	200562	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 4 details)
45566	200564	I	R		x 1.0	Alarm Trigger (See Alarm Table 5 details)
45565	200563	I	R		x 1.0	Alarm Trigger (See Alarm Table 6 details)
45879	200877	I	R		x 1.0	Alarm Trigger (See Alarm Table 7 details)
INTEGER READING-COMPRESSOR 5
46031	201029	I	R	-	x 1.0	Alarm Trigger (See Alarm Table 4 details)
46032	201030	I	R		x 1.0	Alarm Trigger (See Alarm Table 5 details)
46033	201031	I	R		x 1.0	Alarm Trigger (See Alarm Table 6 details)
46034	201032	I	R		x 1.0	Alarm Trigger (See Alarm Table 7 details)

Alarm Bit Index

Alarm Table 1 - Unit Alarm

Refer to Modbus Address 45180 Bacnet Address 200178

Bit No.	Alarm Description
0	¹Leaving Chilled Water Temperature Sensor Failure
1	²Entering Chilled Water Temperature Sensor Failure
2	²Leaving Condenser Water Temperature Sensor Failure
3	²Entering Condenser Water Temperature Failure
4	¹No Chilled Water Flow Alarm
5	¹Chilled Water Pump Starter Alarm
6	¹No Condenser Water Flow Alarm
7	¹Condenser Water Pump Starter Alarm
8	¹Power Lossed Alarm
9	²A Unit Offline in DBLAN Network Alarm
10	¹Leaving Chilled Water Temperature Freeze Alarm
11	²Serial Port Alarm
12	¹Cooler Differential Pressure Sensor Failure
13	¹Condenser Differential Pressure Sensor Failure
14	¹No Cooler Differential Pressure Alarm
15	¹No Condenser Differential Pressure Alarm

Alarm Table 2 - Unit Alarm

Refer to Modbus Address 45181 Bacnet Address 200179

Bit No.	Alarm Description
0	¹Unauthorized Main Controller/Software
1	¹Unauthorized Expansion Board 1
2	¹Unauthorized Expansion Board 2
3	¹Refrigerant Leak Sensor Failure
4	¹Refrigerant Leak High Alarm
5	¹Ambient Temperature Sensor Failure
6	¹Free Cool Temperature Sensor Failure
7	¹UPS Alarm
8	¹Economizer Pressure Sensor Failure
9	¹Shunt Trip Alarm
10	¹Cooler Pressure Sensor Failure
11	¹Condenser Pressure Sensor Failure
12	¹Cooler Outlet Pressure Sensor Failure
13	¹Cooler Inlet Pressure Sensor Failure
14	¹Cond Outlet Pressure Sensor Failure
15	¹Cond Inlet Pressure Sensor Failure

Alarm Table 3 - System Alarm

Refer to Modbus Address 45183 Bacnet Address 200181

Bit No.	Alarm Description
0	¹Refrigerant Level Sensor Failure
1	¹Liquid Line Pressure Failure
2	¹Liquid Line Temperature Failure
3	¹EEV1 Offline (Line In 1)
4	¹EEV1 EEPROM Error (Line In 1)
5	¹EEV1 Motor Error (Line In 1)
6	¹EEV2 Offline (Line In 2)
7	¹EEV2 EEPROM Error (Line In 2)
8	¹EEV2 Motor Error (Line In 2)
9	¹EEV3 Offline (Line Out 1)
10	¹EEV3 EEPROM Error (Line Out 1)
11	¹EEV3 Motor Error (Line Out 1)
12	¹EEV4 Offline (Line Out 2)
13	¹EEV4 EEPROM Error (Line Out 2)
14	¹EEV4 Motor Error (Line Out 2)
15	¹EEV9 Offline (HGBP Valve)

Alarm Table 8 - System Alarm

Refer to Modbus Address 45951 Bacnet Address 200949

Bit No.	Alarm Description
0	¹EEV9 EEPROM Error (HGBP Valve)
1	¹EEV9 Motor Error (HGBP Valve)
2
3
4
5
6
7
8
9
10
11
12
13
14
15	N/A

Alarm Table 4 - Compressor Alarm

Refer to Modbus Address Comp 1 = 45186 Bacnet Address Comp 1 = 200184

Bit No.	Alarm Description
0	¹No Starter Feedback
1	¹No Stop Alarm
2	¹High Pressure Ratio During Startup
3	¹Over Number Lockout per-Day. Please Contact DBI
4	²Compressor Service Alarm
5	¹High Inverter Temperature Alarm
6	¹High Discharge Temperature Alarm
7	¹Low Suction Pressure Alarm
8	¹High Discharge Pressure Alarm
9	¹High 3-Phase Amp Alarm
10	¹High Cavity Temperature Alarm
11	¹High Pressure Ratio Cutout Alarm
12	¹High SCR Temperature Alarm
13	¹Compresser Lockout & Power Cycle Required
14	¹High Motor Winding Temprature Alarm
15	¹High Suction Superheat Alarm

Alarm Table 5 - Compressor Alarm

Refer to Modbus Address Comp 1 = 45083 Bacnet Address Comp 1 = 200081

Bit No.	Alarm Description
0	¹High Earth Leakage Current Alarm
1	¹High Softstart Temperature Alarm
2	¹Compressor Calibration
3	¹Bearing Self Test
4	¹Compressor Axial Distance Alarm
5	¹Compressor Axial Load Alarm
6	¹Compressor Front x-axis Distance Alarm
7	¹Compressor Front y-axis Distance Alarm
8	¹Compressor Front x-axis Load Alarm
9	¹Compressor Front y-axis Load Alarm
10	¹Compressor Rear x-axis Distance Alarm
11	¹Compressor Rear y-axis Distance Alarm
12	¹Compressor Rear x-axis Load Alarm
13	¹Compressor Rear y-axis Load Alarm
14	¹Motor Single Phase Overcurrent Alarm
15	¹DCBus Overvoltage Alarm

Alarm Table 6 - Compressor Alarm

Refer to Modbus Address Comp 1 = 45078 Bacnet Address Comp 1 = 200076

Bit No.	Alarm Description
0	¹Motor Overcurrent Alarm
1	¹Inverter Error Signal
2	¹Rotor Locked & Motor Current Phase Not Aligned
3	¹Bearing Fault
4	¹Motor Voltage Generates No Current
5	¹DCBus Under/Overvoltage
6	¹24VDC Under/Overvoltage
7	¹Low Motor Back EMF
8	¹EEPROM Error
9	¹Generator Mode
10	¹SCR Phase Loss
11	²Compressor Booting Up
12	¹Inverter Temperature Sensor Failure
13	¹Cavity Temperature Sensor Failure
14	¹Suction Temperature Sensor Failure
15	¹Discharge Temperature Sensor Failure

Alarm Table 7 - Compressor Alarm

Refer to Modbus Address Comp 1 = 45077 Bacnet Address Comp 1 = 200075

Bit No.	Alarm Description
0	¹Suction Pressure Sensor Failure
1	¹Discharge Pressure Sensor Failure
2	¹Invalid Bearing Calibratrion
3	¹Inverter Cooling Control Fault
4	¹Motor Cooling Control Fault
5	¹Softstart Temperature Sensor Failure
6	¹EEV VI Offline
7	¹EEV VI EEPROM Error
8	¹EEV VI Motor Error
9	¹Vapor Injection Pressure Sensor Failure
10	¹Vapor Injection Temperature Sensor Failure
11	-
12	-
13	-
14	-
15	-

Use the project wiring diagram and approved controls documentation to confirm design-dependent and optional points before commissioning.

(Fujitsu) General Australia and New Zealand

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Dunham Bush Centrifugal Chiller - Dunham Bush Centrifugal Chiller Modbus / BACnet High-Level Interface Mapping Print

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Dunham Bush Centrifugal Chiller - Dunham Bush Centrifugal Chiller Modbus / BACnet High-Level Interface Mapping Print

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