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TR80 - Installation and Operation Guide
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3. 12. 2 Fan Speed Control
Input register ‘User fan speed’ changes every time the user makes a fan-speed adjustment
on the wall module.
Holding register ‘Fan Speed Active in Master Controller’ is used for local display when the
user fan speed is selected as AUTO.
‘Fan UI attributes’ register description:
• Bit 0: Fan override (0: override not allowed; fan button disabled / 1: Override allowed)
• Bit 1: Display type for single-stage fan (0: 1 bar, 1: 3 bars)
3. 12. 3 HVAC mode selection
TR80 allows two different Hvac mode selection options: simple or advanced. In simple
mode, the occupancy button simply and directly switches between available modes (heat
-
ing/cooling/fan/only…) similarly to a basic A/C unit.
Register
type
Relative
Address
Absolute
Address
Dir
Name
Config
parameter
Type
Range
Default
value
Holding
2204
42205
R/W
Fan type
204
enum
0: no fan
1: Single speed fan
2: Two-speed fan
3: 3-speed fan
4: EC fan
3
Holding
2205
42206
R/W
EC Fan
speed
adjust step
size
205
enum
0: 1%
1: 2%
2: 5%
3: 10%
4: 20%
3
Holding
2206
42207
R/W
Fan speed
low-limit
206
Int
0-100 % for EC
fans,
0-3 for others
0
Holding
2207
42208
R/W
Fan speed
high-limit
207
Int
0-100 % for EC
fans,
0-3 for others
100
Holding
2208
42209
R/W
Fan UI
attributes
208
bitwise
Bit 0: Fan override
allow
Bit 1: Display of 1-
stage fan
1
Holding
1202
41203
R/W
Fan speed
active in
master
controller
-
int
EC Fans: 0..100%
Others: 0..3
Unknown/invalid:
32767
32767
Input
201
30202
R
User fan
speed
-
int
EC Fans: 0..100%
Others: 0..3 (Off-
Lo-Med-Hi)
Auto= 0x7FFF
32767