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TR80 - Installation and Operation Guide
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3. 11. 4 LCD Symbols
Most symbols on the LCD are activated with internal logic depending on current status
(occupancy etc). Other symbols can be only activated via Modbus by a master controller,
as explained below.
The alarm symbol is normally activated by internal fault conditions (see ‘Fault Conditions’
register). The master controller can override this as above.
3. 11. 5 Text override
If a value is written to this register, the upper screen area will display the selected scrolling
text. This overrides any other text that might otherwise be displayed.
Register
type
Relative
Address
Absolute
Address
Dir
Name
Type
Range
Default
value
Holding
1102
41103
R/W
Window open
symbol
Enum
0: off
1: on
2: blink
0
Holding
1103
41104
R/W
ECO symbol
Enum
0: off
1: on
2: blink
0
Holding
1104
41105
R/W
Alarm symbol
Enum
0: off
1: on
2: blink
3: auto
3
Holding
1105
41106
R/W
Day/night
symbol
enum
0: off
1: sun symbol on
2: moon symbol on
3: sun symbol blink
4: moon symbol blink
0
Register
type
Relative
Address
Absolute
Address
Dir
Name
Type
Range
Default
value
Holding
1106
41107
R/W
Text override
enum
0: none
1: "Fan Off"
2: “Clg/Htg Off”
3: "Window Open"
4: "Condensation"
5: "Fire"
6: "Service required"
0