57 TR80 - Installation and Operation Guide
3. 13. 3 Custom User Defined Parameter Unit
A text, up to 4 characters long, can be displayed in the upper screen area. This custom text is
configured with two registers, each character encoded as 8-bits. Only A-Z uppercase chars,
numbers, minus-sign, slash (/) and space are supported.
The display for these 2 values can be configured as detailed below.
Additionally, registers are provided for 2 values with freely configurable display properties.
The ‘Attributes’ register is bitwise interpreted as follows:
Bit1..0: scale
00 (0): scale = 1
01 (1): scale = 0.1
10 (2): scale = 0.01
11 (3): scale = 0.001
Bit 2: reserved
Bits 4..3: basic icons enable
00 (0): none
01 (8) : INDOOR icon
10 (16): SET icon
11 (24): OUTDOOR icon
Bits 8..5: Units icons enable
0000 (0) : none
0001 (32) : celcius
0010 (64) : fahrenheit
0011 (96) : %
0100 (128) : %RH
0101 (160) : Pa
0110 (192) : m3/h
Register
type
Relative
Address
Absolute
Address
Dir Name Unit Scale
Default
value
Holding 2603 42604 R/W Custom parameter 1 text chars 1&2 (config) 1 32767
Holding 2604 42605 R/W Custom parameter 1 text chars 3&4 ppm 1 32767
Holding 2605 42606 R/W Custom parameter 1 attributes °C 0.1 32767
Holding 2603 42604 R/W Custom parameter 2 text chars 1&2 %Rh 1 32767
Holding 2604 42605 R/W Custom parameter 2 text chars 3&4 Pa 1 32767
Holding 2605 42606 R/W Custom parameter 2 attributes m3/h 1 32767
Register
type
Relative
Address
Absolute
Address
Dir Name Unit Scale
Default
value
Holding 1618 41619 R/W Custom parameter 1 Value -
check
below
32767
Holding 1619 41620 R/W Custom parameter 2 Value -
check
below
32767
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