Engo EFAN-230 Zigbee Smart Thermostat Owner’s Manual
RS-485 communication settings
Pxx
Function
Value
Description
Default value
MODBUS Slave device address (ID).
MODBUS Slave device address (ID).
Addr
1 - 247
4800
1
9600
BAUD
Baud
Bitrate (Baud)
None
9600
19200
38400
None
PARI
Parity bit - sets data parity for error detection
StopBit
None
1
Even
Odd
1
Even
Odd
1 stop bit
2 stop bit
STOP
2
Supports the following function codes:
#03 - reading n registers (Holding Registers)
#04 - reading n registers (Input Registers)
#06 - write 1 register (Holding Register)
INPUT registers - read only
Adress
Access
Description
Value range
1-247
Means
Default
1
Dec
0
Hex
0x0000
0x0001
R (#03)
R (#03)
Engo MODBUS Model ID
Firmware-Version
MODBUS Slave (ID)
1
0x0001-0x9999 0x1110=1.1.10 (BCD code)
0b00000010=Idle, switch OFF
0b00000000=Idle, room meet temperature
0b10000001=Heating
2
0x0002
R
(#03)
Working-state
0b10001000=Cooling
0b00001000=Idle, sensor error
3
5
0x0003
0x0005
R
R
(#03)
(#03)
Value of the Integrated temperature sensor, °C
Value of the External temperature sensor S1, °C
50 - 500
50 - 500
N-> temp=N/10 °C
0 = Open (sensor break)/ contact open
1 =Closed (sensor short circuit )/ contact closed
N-> temp=N/10 °C
0 = Open (sensor break)/ contact open
1 =Closed (sensor short circuit )/ contact closed
N-> temp=N/10 °C
6
7
0x0006
0x0007
R
R
(#03)
(#03)
Value of the External temperature sensor S2, °C
50 - 500
0b00000000= OFF
0b00000001= I Fan stage low
0b00000010= II Fan stage medium
0b00000000 - 0b00000100= III Fan state high
0b00001111 0b00001000= Auto - OFF
0b00001001= Auto - I low
Fan state
0b00001010= Auto - II medium
0b00001100= Auto - III high
0 = OFF (valve closed)
0 - 1000
8
9
0x0008
0x0009
R
R
R
(#03)
(#03)
(#03)
Valve 1 stat
Valve 2 state
1000 = ON / 100% (valve open)
0 = OFF (valve closed)
0 - 1000
1000 = ON / 100% (valve open)
10 0x000A
Humidity measurement (with 5% indication accuracy)
0 - 100
N-> humidity=N %
2
| General | Details |
|---|---|
| Name | Engo EFAN-230 Zigbee Smart Thermostat Owner’s Manual |
| Make | ENGO |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.12 MB |

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