Airwell Airflow 2020, Installation And Operating Manual

Page: 63 / 80

63
11 - OPTION
SUPERVISOR AREA
Address
Modbus
(decimal)
rd : read
wr : write
2101 rd/wr Flag register bitmap
2102 rd/wr
EXTERNAL value of the Vrec
adjustment component
%
2103 rd/wr
Return temperature EXTERNAL
value
°C/10
2104 rd/wr
Return humidity EXTERNAL
value
°C/10
2105 rd/wr
External temperature
EXTERNAL value
°C/10
2106 MSB rd/wr
(Reduced air flow rate control -
off )
no. (0-1)
2106 LSB rd/wr Silent mode control no. (0-1)
2107 rd/wr Heat Ambient Setpoint value °C/10
2108 rd/wr Cool Ambient Setpoint value °C/10
CONTROLS ASSOCIATED WITH STATUSES/OPERATING
MODE
Controls received via the Modbus serial device are
subject to the same acquisition constraints that apply
for keyboards (for instance, if the ventilation-only mode
is active, it is not possible to switch from ECO to non-
ECO or vice versa).
For the bitmap controls from Modbus, the 4-5-6 bits
must be set to specific set of three values
according to the required status and the current
status (if the set of three values is not allowed, the
control of the associated statuses is ignored).
REQUIRED
CONTROL
(from Modbus)
bit6 bit5 bit4
onoff eco vent.
loc. only
Current operating status that
allows to acquire the required
control
bit2 bit6 bit5 bit4
REQU. in OFF
mode
0 0 0 1 x y z (x,y,z ={0,1})
REQU. in ON
mode
1 0 0
1 0 0 0 (current status –
off)
1 0 1 0 (current status –
eco)
REQU. in ECO
mode
0 1 0
1 1 0 0 (current status –
normal on)
REQU. in
VENT-ONLY
mode on
0 1 1
1 0 1
1 0 1 0 (current status –
eco)
1 1 0 0 (current status –
normal on)
REQU. in
VENT-ONLY
mode on
0 1 0
1 0 0
1 0 1 1 (current status –
fan-only in eco
mode)
1 1 0 1 (current status –
fan-only in nor-
mal on)
For the other status/mode controls (heat/cool), the
activation request is indicated by corresponding bit=1
Bit 7 6 5 4 3 2 1 0
Value to
send
Weight 128 64 32 16 8 4 2 1
Controls
Unit switching
on and/or go
to Test mode
0 64 0 0 0 4 0 1
69
(0x45)
Unit switching
on and/or go
to Heat mode
0 64 0 0 0 4 2 0
70
(0x46)
Unit switching
on and/or go
to Cool mode
0 64 0 0 8 4 0 0
76
(0x4C)
Unit switching
off (as by ON/
OFF button)
0 0 0 0 0 4 0 0
4
(0x04)
Unit off and/or
go to Heat
mode
0 0 0 0 0 4 2 0 6 (0x06)
Unit off and/or
go to Cool
mode
0 0 0 0 8 4 0 0
12
(0x0C)
Unit switching
off (as by
digital input)
0 64 0 0 0 0 0 0
64
(0x40)
Simplified table