Honeywell TR80

57TR80 - 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
DirNameUnitScale
Default
value
Holding260342604R/WCustom parameter 1 text chars 1&2(config)132767
Holding260442605R/WCustom parameter 1 text chars 3&4ppm132767
Holding260542606R/WCustom parameter 1 attributes°C0.132767
Holding260342604R/WCustom parameter 2 text chars 1&2%Rh132767
Holding260442605R/WCustom parameter 2 text chars 3&4Pa132767
Holding260542606R/WCustom parameter 2 attributesm3/h132767
Register
type
Relative
Address
Absolute
Address
DirNameUnitScale
Default
value
Holding161841619R/WCustom parameter 1 Value-
check
below
32767
Holding161941620R/WCustom parameter 2 Value-
check
below
32767