
Appendix A: Network Points List for RTU Open
RTU Open v3
Carrier Proprietary and Confidential
CARRIER CORPORATION ©2016
Integration Guide
All rights reserved
40
BACnet
Modbus
Point Name
Point
Access
Units
Default
Value
BACnet Point Name
BACnet Object
ID
Modbus Register Type Modbus
Register #
Air Source Mode
R
1=Off
2=Warmup
3=Heating
4=Cooling
5=Freecool
6=Pressure
7=Evac
8=Vent
link_ahu_mode
MSV:2005
Compressor
Stages
R/W
1=One Stage
2=Two Stages
2
comp_stages
MSV:91003
Equipment Status R
1=Disabled
2=Test
3=Run
mode_status
MSV:2001
Fan Control
R/W
1=Single Speed
2=Two Speed
3=Variable Speed
3
fan_type
MSV:9031
Fan Mode
R/W
1=Auto
2=Continuous
3=Always On
2
fan_mode
MSV:9032
Input 1 Function
R/W
1=No Sensor
2=IAQ Sensor
3=OAQ Sensor
4=Space RH
Sensor
1
ai1_function
MSV:81001
Input 2 Function
R/W
1=No Sensor
2=IAQ Sensor
3=OAQ Sensor
4=Space RH
Sensor
1
ai2_function
MSV:81002
Input 3 Function
R/W
1=No Function
2=Compressory
Safety
3=Fan Status
4=Filter Status
5=Remote
Occupancy
6=Door Contact
2
di3_function
MSV:81003
Input 3 Switch
Configuration
R/W
1=NO
2=NC
1
di3_type
MSV:81013
Input 5 Function
R/W
1=No Function
2=Fire Shutdown
3=Fan Status
4=Filter Status
5=Remote
Occupancy
6=Door Contact
2
di5_function
MSV:81005
Input 5 Switch
Configuration
R/W
1=NO
2=NC
1
di5_type
MSV:81015
Input 8 Function
R/W
1=No Function
2=Enthalpy
Switch
3=Fan Status
4=Filter Status
5=Remote
Occupancy
6=Door Contact
2
di8_function
MSV:81008
Input 8 Switch
Configuration
R/W
1=NO
2=NC
1
di8_type
MSV:81018
Input 9 Function
R/W
1=No Function
2=HumidiStat
2
di9_function
MSV:81009