Thermal Solutions APEX APX425C - 10 Operation (continued); Modbus Register List for Setpoints (continued)

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APEX Installation, Operating, & Service Instructions APEX Installation, Operating, & Service Instructions
SETPOINTS
Modbus
Register
Protocol
Name
Description
Read (R) /
Write (W)
410065 CH setpoint source
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
3=Outdoor reset,
4=Remote control (4-20mA ),
7=Outdoor reset time of day
R
410016 Active CH setpoint
-40 F (-40°C) to 266°F (130°C)
Setpoint determined by CH setpoint source (register 65).
R
410081
DHW setpoint
source
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
5=DHW tap setpoint,
6=DHW preheat setpoint
R
410017 Active DHW setpoint
-40°F (-40°C) to 266°F (130°C) Setpoint determined by DHW setpoint source
(register 81).
R
410162
Lead Lag master
setpoint source
0=Unknown,
1=CH setpoint,
2=CH TOD setpoint,
3=Outdoor reset,
4=Remote control (4-20mA ),
5=DHW setpoint,
6=DHW TOD setpoint,
7=Outdoor reset time of day,
8=Mix setpoint
R
410018 Active LL setpoint
-40 F (-40°C) to 266 F (130°C)
Setpoint determined by LL setpoint source (register 162).
R
410643
Low Temperature
setpoint
Setpoint entered on the local user interface.
valid range 79°F (26.1°C) to 191°F (88.3°C)
R
410121
Low Temperature
setpoint source
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
3=Outdoor reset,
4=Remote control,
7=Outdoor reset time of day,
9=Outdoor boost
R
410024
Active Low
Temperature
setpoint
-40 F (-40°C) to 266°F (130°C) Setpoint determined by Low Temp setpoint
source (register 121).
R
Table 10-26: Modbus Register List (continued)
10 Operation (continued)