Appendix A: Network Points List for RTU Open
RTU Open v5
CARRIER CORPORATION ©2019
Integration Guide
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49
BACnet
Modbus
Point Name
Point
Access
Units
Default
Value
BACnet Point Name
BACnet
Object ID
Modbus Register
Type
Modbus
Register #
1=Alarm
Supply Fan Runtime
R
0=Normal
1=Alarm
sfan_rntm_alarm
BV:7010
Switch Configuration
R
0=Normal
1=Alarm
di_cfg_alarm
BV:7025
System is shut down
R
0=No
1=Yes
shutdown_status
BV:2011
Unocc Free Cool
R/W
0=Disable
1=Enable
Inactive
(0)
ntfc_ena
BV:80001
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
di8_function
MSV:81008