Modbus Control & Interface Features; System Features - AERMEC FCWI 222V Manuel D'utilisation Et D'installation

MODBUS CONTROL & INTERFACE FEATURES
UNIT'S SLAVE ADDRESS SETTING
To be able to operate each unit individually, the unique unit's slave address should be set.
• Connect the PFW3 remote control to the main electronic board.
• Press & hold MODE &
• To increase/decrease the setting, press the
The 2-digit LED will blink the new setting for 5 seconds.
MODBUS CONTROL & INTERFACE
The modbus control and interface features can be used via the RS-485 port. A 24 AWG cable is recommended, less than 500m long.
The communication protocol is Modbus RTU with the baud rate of 19200 bps, LSB first + even parity + 1 stop bit.
This PCB operates as a slave unit that can support these below Modbus functions.
01(dec) – Read variable (max 16 variables for a single command) 03(dec) – Read registers (max 16 registers for a single command)
05(dec) – Write single variable
06(dec) – Write single register 15(dec) – Write variables (max 16 variables for a single command)
16(dec) – Write registers (Max 16 registers for a single command)
Address and details of the variables
Address
Hex Dec No.
0000 0 1
0001 1 2
Register address & details
Address
Hex Dec No.
0000 0 1
0001 1 2
0002 2 3
0010 16 17
0011 17 18
0012 19 19
0021 33 34
0022 34 35
0023 35 36
0024 36 37
0025 37 38

SYSTEM FEATURES

7.1 EMERGENCY ON/OFF BUTTON
In case the wireless remote is lost, there is an emergency button on the fan coil unit to turn on/off the air-conditioner and also to
change the operating mode with the sequence below.
buttons for 3 seconds, the 2-digit LED will blink the current address.
or
/ description
USER POWER ON/OFF
USER SWEEP ON/OFF
/ description
USER MODE
USER FAN SPEED LEVEL
USER SET TEMPERATURE (ROOM)
System operating status register#1
System operating mode
System fan speed level
System alarm status
System operating status register#2
Room temperature
Indoor coil temperature
Outdoor coil / Water-in temperature
POWER OFF
POWER OFF
key. The address can be set 1-99 (decimal).
POWER OFF
POWER OFF POWER OFF
* R = read only, RW = read/write
R/W
RW
RW
* R = Read only , RW = Read/Write
R/W / description
RW 0-4 for FAN, COOL, DRY, HEAT, AUTO
RW 0 = Auto speed , 1-3 for level 1-3
RW 180-300 from 18.0 to 30.0°C
R Bit#0 = Power, Bit#1 = Sweep
R 0-3 for FAN, COOL, DRY, HEAT
R 0 = Off , 1-4 for level 1-4
Bit#0 = Troom-error, #1 = Tindc-error
#2 = Toutc/water-error, #3 = Fan fail Bit#8 = Ind-
freeze, #9 = Out-defrosting
R
#10 = Ind-overheat, #11 = Out-overheat
#14 = Wrong mode water (not cool)
#15 = Wrong mode water (not heat)
Bit#0 = Cool relay, #1 = Ofan/Pump relay
R
#2 = Rev/Heat relay, #3 = Aux relay
R 0-500 for 0.0 to 50.0°C
R 0-500 for 0.0 to 50.0°C
R 0-500 for 0.0 to 50.0°C
POWER ON
COLD
POWER ON
COOL HEAT
POWER ON POWER ON
POWER OFF COLD COLD
POWER ON POWER ON
COOL COOL
HEAT HEAT
/ description
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