Appendix A: Network Points List for RTU Open
RTU Open v5
CARRIER CORPORATION ©2019
Integration Guide
All rights reserved
50
BACnet
Modbus
Point Name
Point
Access
Units
Default
Value
BACnet Point Name
BACnet
Object ID
Modbus Register
Type
Modbus
Register #
2=Enthalpy
Switch
3=Fan Status
4=Filter Status
5=Remote
Occupancy
6=Door Contact
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
3=Fan Status
4=Filter Status
5=Remote
Occupancy
6=Door Contact
2
di9_function
MSV:81009
Input 9 Switch
Configuration
R/W
1=NO
2=NC
1
di9_type
MSV:81019
Number Of Heat Stages R/W
1=1
2=2
3=0
2
heat_stages
MSV:91004
Occupancy Source
R/W
1=Always
Occupied
2=BACnet
Schedule
3=BAS On/Off
4=Remote Occ
Input
1
occ_source
MSV:1002
Space sensor type
R/W
1=T55
2=T56
3=SPT Sensor
4=None
1
spt_type
MSV:9001
Space Temp Source
R
1=Sensor Failure
2=SPT Sensor
3=T55 / T56
4=Network
5=Airside Linkage
6=Locked Value
spt_status
MSV:2003
Unit Type
R/W
1=Heat / Cool
2=LC
WeatherExpert
3=HP O/B Ctrl
4=HP Y1/W1 Ctrl
2
unit_type
MSV:9018
ZS Temp Sensor
R
0=Normal
1=Alarm
zst_sensor_fail
BV:7051
Economizer Operation
R
0=Normal
1=Fault Detected
econ_opr
BV:7054
Space Temperature
Alarm Status
R
0=Normal
1=Alarm
spt_alrm_status
BV:7056
SPT Sensor
R
°F
zone_temp_zone_tem
p
AI:1
SPT Sensor
R
min
zone_temp_override_
time_remaining
AV:1
input_10
R
°F
ai_10
AI:1010
Factory Test Analog 1
Control
R/W
%
0
ao1_fac_test
AV:91001
Economizer High OAT
Lockout Temp
R/W
°F
75
oat_ec_lockout
AV:9008
Maximum Heating SAT
R/W
°F
120
sat_ht_max
AV:83004