Daikin UAA-ST3M User Manual

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8. BAS INTERFACE
8.1 General
The MicroTechIII controller is available with an exclusive Daikin feature that provides
easy integration with a building automation system (BAS). If the unit is to be tied into a BAS
system, the controller should have been purchased with the correct factory-installed
communication module. The modules can also be added in the field during or after installation.
If an interface module was ordered, one of the following BAS interface installation
manuals was shipped with the unit. Contact your local Daikin sales office fora replacement, if
necessary. This BAS interface can communicate using Modbus protocol or BACnet protocol.
8.2 Modbus protocol
8.2.1 MODBUS Data Points
No.
Register
Level
<2>
Description
Units
DataType
R/W
Notes
Notes
English
Metric
1
40009
Single
Chiller OnOff
--
--
unsigned word
R/W
0:Off
1:On
<1>
2
40034
Single
ACS
Chiller Mode Set
--
--
unsigned word
R/W
1:Ice
2:Cool
3:Heat
3
40035
Cool Water SetPoint
℉×10
℃×10
signed word
R/W
——
4
40036
Ice Water SetPoint
℉×10
℃×10
5
40037
Heat Water Setpoint
℉×10
℃×10
6
40012
Active Setpoint
℉×10
℃×10
R
——
7
40838
Control Source
--
--
unsigned word
R
0:Local
1:Network
8
40005
Single
Master
Chiller Alarm
--
--
unsigned word
R
0:Normal
1:Alarm
9
40006
Evap Flow Status
--
--
0:Open
1:Close
10
40013
Chiller Actual Capacity
%×10
%×10
——
11
40015
Chiller Status
--
--
1:Off
3:Auto
4:Pumpdown
5:Test
12
40016
Evap Inlet Water Temp
℉×10
℃×10
signed word
R
——
13
40017
Evap Outlet Water Temp
℉×10
℃×10
14
40024
Ambient Temp
℉×10
℃×10
15
40031
Chiller Warn Code
--
--
unsigned word
R
——
16
40032
Chiller Probble Code
--
--
17
40033
Chiller Fault Code
--
--
18
40303
Evap Pump #1 Run Hours
Hour
Hour
unsigned word
R
——
19
40305
Evap Pump #1 Status
--
--
0:Off
1:Start
20
40306
Single
Evap Pump #2 Run Hours
Hour
Hour
unsigned word
——
21
40308
Evap Pump #2 Status
--
--
0:Off
1:Start
22
40832
Single
Master
Unit Actual Status
--
--
unsigned word
R
——
23
40039
System #1 Cond Pressure
psi×10
kPa×10
signed word
R
——
24
40040
System #1 Cond Sat Temp.
℉×10
℃×10

Daikin UAA-ST3M Specifications

General

Brand	Daikin
Model	UAA-ST3M
Category	Chiller
Language	English