Daikin FWEC2 Manuel D'installation page 25

NON-SERIOUS ALARMS
Thermostat OFF
■ Code A03 = water sensor error
■ Code A04 = remote humidity probe error (only if a remote
temperature probe is installed)
■ Code A05 = internal humidity probe error
N.B.: the alarm code is displayed only when the thermostat
is switched off
MODBUS
The protocol implemented in the controller is Modbus RTU
(9600, N, 8, 2) on RS485
FUNCTIONS IMPLEMENTED
■ 0x03 : Read Holding Registers
■ 0x04 : Read Input Registers
■ 0x10 : Write Multiple registers
EXCEPTIONS IMPLEMENTED
Exception Code 02: Invalidate data address
LIST OF SUPERVISION PARAMETERS
ADDRESS REGISTER
Status
0
Speeds
1
Air temperature
2
3 Humidity
Water temperature
4
P00: Confi guration
5
6 P05: Confi g. DIN
T. Active setpoint
7
T. User setpoint
8
LCD version
9
Digital 1
50
-
51
Setpoint - Cooling
52
Setpoint - Heating
53
Minimum Setpoint – Cool.
54
Maximum Setpoint – Cool.
55
Minimum Setpoint – Heat.
56
Maximum Setpoint – Heat.
57
Speeds
58
59 Economy Correction
FWEC2
Advanced electronic controller
FC66002764
DESCRIPTION OF READ-ONLY REGISTERS [R]
■ "Staus" "REGISTER"
Bit 15
-
Bit 7
Thermostat ON
Vh
- On/Off: unit status (0: Off, 1=On)
- S/W: operation mode (0: S=cooling,1:W=heating)
- P01: "on unit/wall-mounted" parameter
- Eco: Economy logic active
- Min.T: Minimum Temperature logic selected
- Alarm: general alarm indication (activated when any of
the managed alarms is triggered)
- Vc: status of digital output Vc
- Vh: status of digital output Vh
- DI1: logical value of dig. input 1 (the physical status of the
input depends on the associated logic)
- DI2: logical value of dig. input 2 (the physical status of the
input depends on the associated logic)
- P07: "DIN 2 Logic" parameter
- P06: "DIN 1 Logic" parameter
- Dehum: dehumidifi cation ON (0:no, 1:yes)
- P04: "water probe present" parameter
■ "SPEED" REGISTER: current operating speed of the
indoor unit
- 0: fan OFF
- 1: extra-low speed
TYPE U.M.
- 2: low speed
R -
- 3: medium speed
- 4: high speed
R -
■ "AIR TEMPERATURE" REGISTER: room temperature
R [°C/10]
read by the controller and shown on the display (N.B.:
this temperature corresponds to the reading of the remote
R %
probe if the controller is located on the unit, or the read-
R [°C/10]
ing of the internal probe in the case of a wall-mounted
controller and remote probe disconnected)
R -
■ "HUMIDITY" REGISTER: room humidity read by the
R -
controller via the probe associated with the temperature
probe used
R [°C/10]
■ "WATER TEMPERATURE" REGISTER: value read by the
R [°C/10]
water probe (SW)
■ "P00" Register: "Controller confi guration" parameter
R -
■ "T. ACTIVE SETPOINT" Register: setpoint used for tem-
perature control
■ "T. USER SETPOINT" Register: setpoint programmed by
R/W -
the user (it may differ from the active setpoint due to cor-
R/W -
rections based on economy logics,...or use of the setpoint
imposed by the supervision software)
R/W [°C/10]
■ "LCD VERSION" Register : defi nes the controller type and
software version installed (0xHHSS: HH: ASCII character,
R/W [°C/10]
SS:sw version)
R/W [°C/10]
R/W [°C/10]
R/W [°C/10]
R/W [°C/10]
R/W -
R/W [°C/10]
H
Bit 14 Bit 13 Bit 12 Bit 11 Bit 10
- P04 Deum P06 P07
L
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2
Vc Alarm MinT Eco P01
Installation and operation manual
Bit 9 Bit 8
DI2 DI1
Bit 1 Bit 0
S/W On/Off
9