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ECO-SMART MODBUS ADDRESS
Configuration Modbus
Protocol
Default slave adress
Baud rate
Data length
Parity
Stop bits
Physical layer
Parameter
Content
No.
00
Power to auto restart
01
Heater valid or invalid
02
Bypass opening temperature X
03
Bypass opening
temperature range Y
04
Defrosting interval
05
Defrosting enter temperature
06
Defrost duration time
07
CO2 sensor
08
ModBus address
09
ERV ON/OFF
10
Supply fan speed
11
Exhaust fan speed
12
Room temperature
13
Outdoor temperature
14
Exhaust air temperature
15
Defrosting temperature
16
External ON/OFF signal
17
CO2 ON/OFF signal
18
Fire alarm signal/bypass/
defrosting signal
19
Humidity setting value
20
Error symbol
24
Multifunction Setting
25
Filter alarm timer
27
Heater on/off temperature
768
CO2 value
769
Fan running time record
770
Indoor humidity
Modbus RTU
01
4800 bps or 9600 bps
8
None
1
RS485 (two wire + GND)
Range
0/1
0/1
5-30
2-15
15-99
-9 to 5
2-20
0 / 80-250
0 = No CO2 sensor
80 = 800 ppm, 250 = 2500 ppm
Advised setting = 1000 ppm
01-16
0-OFF 1-ON
Fan speed: 0=stop, 2=speed 1, 3=speed 2,
5=speed 3, 8=speed 4, 9=speed 5, 10=speed
6, 11=speed 7, 12=speed 8, 13=speed 9,
14= speed 10
Fan speed: 0=stop, 2=speed 1, 3=speed 2,
5=speed 3, 8=speed 4, 9=speed 5, 10=speed
6, 11=speed 7, 12=speed 8, 13=speed 9,
14= speed 10
observed value, showing number minus 40
observed value, showing number minus 40
observed value, showing number minus 40
observed value, showing number minus 40
query value, 0=off, 1=on
query value, 0=off, 1=on
query value: B0- 1-fire alarm ON, B1-
1-bypass on, B2- 1-bypass off, B3- 1- defrosting
1-99
query value: B0-OA sensor error, B1-EEPROM
error, B2-RA sensor error, B3-EA sensor er-
ror, B5-SA sensor error, B6-Supply Fan error,
B7-Exhuast Fan error
0-Reserved, 1-Filter alarm clear
0-45 days, 1-60 days, 2-90 days, 3-180 days
10-25
PPM
Unit: 0.1h , range 0-65535
1%
Default
Remark
1
R/W
0
R/W
19
R/W
3
R/W
30
R/W
-1
R/W
10
R/W
0
R/W
01
R/W
R/W
R/W
R/W
R
R
R
R
R, If in On, then ven-
tilator at high speed
R, If in On, then ven-
tilator at high speed
R
R/W
R
R
R
R/W
R
R
R
EN
25
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