41 TR80 - Installation and Operation Guide
3. 8. 4 LCD Symbols
Most symbols on the LCD are activated with internal logic depending on current status (occu-
pancy 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). The
master controller can override this as above.
3. 8. 5 Text override
If a non-zero 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
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