Appendix A: Network Points List for RTU Open
RTU Open v5
CARRIER CORPORATION ©2019
Integration Guide
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44
Network points list for BACnet and Modbus
BACnet
Modbus
Point Name
Point
Access
Units
Default
Value
BACnet Point Name
BACnet
Object ID
Modbus Register
Type
Modbus
Register #
SA Vent / Temper
Setpoint
R/W
°F
65
tempering_stpt
AV:3032
Holding Register
(Float)
174
VFD Speed Config
R/W
%/V
%
vfd_spd_cfg
AV:1030
Heating VFD Output
R/W
%
100
heat_vfd_spd
AV:3033
Voltage Used to Set IDF
VFD Heat Speed
R/W
V
4.4
ht_spd_volt
AV:83010
Voltage Used to Set IDF
VFD Maximum Speed
R/W
V
10
max_spd_volt
AV:83011
Voltage Used to Set IDF
VFD Minimum Speed
R/W
V
5.2
min_spd_volt
AV:83012
Tempering Enable
R/W
Disable
sa_tempering_en
AV:83016
VFD Speed Test
R/W
V
0
vfd_spdv_test
AV:81003
Supply Fan VFD Voltage R
V
vfd_volt_output
AV:2032
VFD Analog Input
Channel Type
R/W
Vdc
2 to 10
vfd_in_type
AV:91010
Active Heat Stages
R
heat_run
AV:2003
Input Register
(Float)
33
Effective Cool Setpoint
R
°F
eff_cl_stpt
AV:3005
Input Register
(Float)
55
High Space Temperature R
0=Normal
1=Alarm
spt_hi_alarm
BV:7011
Discrete Input
35
Low Space Temperature R
0=Normal
1=Alarm
spt_lo_alarm
BV:7012
Discrete Input
39
Input_6
R
°F
ai_6
AI:1006
Supply Fan Relay State
R
0=Off
1=On
sfan
BV:2001
Discrete Input
23
Supply Fan Status
R
0=Off
1=On
sfan_status
BV:1003
Discrete Input
24
Economizer Output
R
%Open
econ_output
AV:2022
Input Register
(Float)
51
Outdoor Air Quality
Sensor
R
0=Normal
1=Alarm
oaq_fail
BV:7006
Discrete Input
41
DCV Max Vent Damper
Pos
R/W
%Open
50
iaq_dpr_max
AV:9011
Holding Register
(Float)
47
Space Temperature -
Prime Variable
R
°F
space_temp
AV:2007
Input Register
(Float)
107
HP Rev Cycle Lockout
Temp
R/W
°F
-3
hp_rev_cycle_lockout AV:9004
Holding Register
(Float)
71
System Outdoor Air
Temperature
R/W
°F
-999
system_oat
AV:1901
Holding Register
(Float)
119
Economizer Purge Min
Pos
R/W
%Open
40
econ_purge_min
AV:9029
Holding Register
(Float)
75
Active Compressor
Stages
R
comp_run
AV:2020
Input Register
(Float)
31
System Mode
R
1=Off
2=Fan Only
3=Economizer
Cooling
4=Cooling
5=Heating
6=Dehumidificati
run_status
MSV:2002
Input Register
(Signed)
1