Appendix A: Network Points List for RTU Open
RTU Open v5
CARRIER CORPORATION ©2019
Integration Guide
All rights reserved
46
BACnet
Modbus
Point Name
Point
Access
Units
Default
Value
BACnet Point Name
BACnet
Object ID
Modbus Register
Type
Modbus
Register #
Compressor Status
R
0=Normal
1=Alarm
comp_alarm
BV:7013
Discrete Input
30
Filter Service Alarm
Timer
R/W
hr
600
filter_service_hrs
AV:2019
Holding Register
(Float)
67
Indoor Air Quality Sensor R
0=Normal
1=Alarm
iaq_sensor_fail
BV:7039
Discrete Input
37
Heating Lockout
Temperature
R/W
°F
65
oat_ht_lockout
AV:9003
Holding Register
(Float)
69
Dehumidification
R
0=Inactive
1=Active
dehum
BV:2006
Discrete Input
9
Reversing Valve Relay
State
R
0=Off
1=On
aux_1
BV:2007
Discrete Input
20
Password Protected
Output Variable
R/W
0
ppo
AV:90000
Vent Dmpr Pos / DCV
Min Pos
R/W
%Open
20
econ_min
AV:9005
Holding Register
(Float)
131
Filter
R
0=Clean
1=Dirty
filter_alarm
BV:7017
Discrete Input
31
Safety Chain
R
0=Normal
1=Alarm
safety_alarm
BV:7024
Discrete Input
43
Unocc Relative Humidity
Setpoint
R/W
%rh
95
unocc_dehum_stpt
AV:3012
Holding Register
(Float)
129
Setpoint
R/W
°F
occ_ht_stpt
AV:3002
Holding Register
(Float)
19
Supply Air Temp Sensor R
0=Normal
1=Alarm
loc_sat_sensor_fail
BV:7020
Discrete Input
51
Override Time
Remaining
R
min
ovrde_time
AV:2016
Input Register
(Float)
93
Setpoint Adjustment
R/W
0=Disable
1=Enable
Active (1) stpt_adj_enable
BV:1013
Coil
26
System Space
Temperature
R/W
°F
-999
system_spt
AV:1902
Holding Register
(Float)
123
Space Temperature
Offset Pot
R
°F
stpt_adj_offset
AV:91006
System Outdoor AQ
R/W
ppm
-999
system_oaq
AV:1908
Holding Register
(Float)
155
Outdoor Air Temp
Sensor
R
0=Normal
1=Alarm
oat_fail
BV:7029
Discrete Input
27
SPT Sensor
R
0=Normal
1=Alarm
spt_sensor_fail
BV:7032
Discrete Input
38
Fan / Speed
R
1=Off
2=Low
3=Med
4=High
5=On
fan_run
MSV:2004
Input Register
(Signed)
175
Setpoint Adjustment
Range
R/W
°^F
5
stpt_adj_range
AV:9015
Holding Register
(Float)
101
Enthalpy (BACnet)
R/W
0=High
1=Low
Active (1) oae
BV:1901
Coil
6
Optimal Start
R/W
hr
1
optm_start
AV:9026
Holding Register
(Float)
147
System Cooling Demand
Level
R
cool_demand_level
AV:9006
System Heating Demand
Level
R
heat_demand_level
AV:9036
System OAT Master
R
°F
mstr_oa_temp
AV:80001