TR80 - Installation and Operation Guide 40
3. 8. 2 LED Ring
These registers can be used to determine or override the default color and behavior of the
LED ring.
Ring brightness in normal operation and ring brightness in SLEEP mode can be individu-
ally set. The ring colour and style normally change automatically based on hvac mode
(heating = orange, cooling = blue…) received from controller (Refer HVAC mode selection).
The master controller can override the automatically determined colour by writing a value
to the ‘Ring Colour’ register. The format is RGB565 (5 bits red, 6 bits green, 5 bits blue from
most significant to least). A value of 0 (corresponding to black) represents AUTO mode,
meaning the LED ring changes colour according to currently active hvac mode.
The controller can also override the ring style by writing to holding register 1101.
3. 8. 3 Temperature display configuration
It is possible to disable temperature unit change on the wall module and have it fixed in
Celsius or Fahrenheit.
Register
type
Relative
Address
Absolute
Address
Dir Name
Config
parameter
Type Range
Default
value
Holding 2104 42105 R/W Ring brightness 102 int 0-100% 100%
Holding 2105 42106 R/W
Ring brightness
in sleep mode
103 int 0-100% 75%
Holding 1100 41101 R/W Ring colour -
RGB56
5
0-65535 0 (Auto)
Holding 1101 41102 R/W Ring style - enum
0: auto
1: off
2: steady
3: slow breath
4: medium
breath
5: fast breath
6: blink
7: fast blink
1
Register
type
Relative
Address
Absolute
Address
Dir Name
Config
parameter
Type Range
Default
value
Holding 2106 42107 R/W
Room
temperature
display
resolution
104 Enum
0: don't display
1: 1 deg resolution
2: 0.5 deg resolution
3: 0.1 deg resolution
1
Holding 2107 42108 R/W
Outdoor
temperature
display
resolution
105 enum
0: 1 deg resolution
1: 0.5 deg resolution
2: 0.1 deg resolution
2
Holding 2108 42109 R/W
Temperature
unit & user
change option
106 enum
0: °C (user can
change)
1: °F (user can
change)
2: °C (fixed)
3: °F (fixed)
0
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