Thermal Solutions APEX APX425C Installation, Operating And Service Instructions page 111

10
Operation
(continued)
Table 10-26: Modbus Register List (continued)
Modbus Protocol
Register Name
410065 CH setpoint source
410016 Active CH setpoint
DHW setpoint
410081
source
410017 Active DHW setpoint
Lead Lag master
410162
setpoint source
410018 Active LL setpoint
Low Temperature
410643
setpoint
Low Temperature
410121
setpoint source
Active Low
410024 Temperature
setpoint
106308-05 - 3/23
SETPOINTS
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
3=Outdoor reset,
4=Remote control (4-20mA ),
7=Outdoor reset time of day
-40 F (-40°C) to 266°F (130°C)
Setpoint determined by CH setpoint source (register 65).
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
5=DHW tap setpoint,
6=DHW preheat setpoint
-40°F (-40°C) to 266°F (130°C) Setpoint determined by DHW setpoint source
(register 81).
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
-40 F (-40°C) to 266 F (130°C)
Setpoint determined by LL setpoint source (register 162).
Setpoint entered on the local user interface.
valid range 79°F (26.1°C) to 191°F (88.3°C)
0=Unknown,
1=Normal setpoint,
2=TOD setpoint,
3=Outdoor reset,
4=Remote control,
7=Outdoor reset time of day,
9=Outdoor boost
-40 F (-40°C) to 266°F (130°C) Setpoint determined by Low Temp setpoint
source (register 121).
APEX Installation, Operating, & Service Instructions
Description
Read (R) /
Write (W)
R
R
R
R
R
R
R
R
R
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