TR80 - Installation and Operation Guide46
3. 9. 3 HVAC mode selection
TR80 allows two different Hvac mode selection options: simple or advanced. In simple
mode, the occupancy button simply and directly switches between available modes (heat-
ing/cooling/fan-only…) similarly to a basic A/C unit.
Applications that have more complicated requirements (for example having two different
cooling systems within the same room) can use the advanced mode.
Register 1201 allows a master controller to control the LED ring to indicate the status of
cooling and heating in the room. A constant blue means that cooling mode is active, but is
not currently switched on. A constant orange means that the heating mode is active, but is
not currently switched on. The ring begins to breathe as soon as the room is cooled or
heated. A breathing green means the fan is on with no cooling and no heating. Gray means
that no cooling and no heating is currently possible; the central cooling and heating sys-
tem is turned off or the room user has disabled cooling or heating via a HVAC Mode over-
write.
Register 1201 is encoded as follows:
•Bit representation: 000D CCBB 0000 0AAA
•AAA (bits 2-0): currently active hvac mode
•BB (bits 9-8): Heating outputs status
•CC (bits 11-10): Cooling outputs status
•D (bit 12): fan output status
Register
type
Relative
Address
Absolute
Address
DirName
Config
parameter
TypeRange
Default
value
Holding220942210R/W
HVAC mode selection
type
209enum
0: disabled
1: simple
2: advanced
0
Holding221042211R/WAvailable HVAC modes210enum
Bit0: "AUTO"
Bit1: "HEAT"
Bit2: "COOL"
Bit3: "FANONLY"
Bit4: "OFF"
Bit5: "HTG1"
Bit6: "HTG2"
Bit7: "CLG1"
Bit8: "CLG2"
15
(auto,
heat,
cool, fan)
Holding120141202R/W
Ring behavior
depending on cooling
and heating
-enumSee Below0
Input20030201R
User selected HVAC
mode
-enum
0: Auto
1: Heating
2: Cooling
3: Fan-only
4: Off
5: Heating 1
6: Heating 2
7: Cooling 1
8: Cooling 2
0
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