Unit set read command
Register
address
Data content
Remarks
0
Power on/off
BIT15
Reserved
BIT14
Reserved
BIT13
Reserved
BIT12
Reserved
BIT11
Reserved
BIT10
Reserved
BIT9
Reserved
BIT8
Reserved
BIT7
Reserved
BIT6
Reserved
BIT5
Reserved
BIT4
Reserved
BIT3
Reserved
BIT2
Reserved
BIT1
Reserved
BIT0
0: power off;
1: power on.
1
Setting mode
1:invalid ; 2:hybird 3: e-heater 4:vacation
2
Setting the temperature Ts
unit: °C.
Setting range 38-70°C (actual value)
Send value = actual value*2+30
unit: °F.
Setting range 100-158°F
Send value = actual value
3
Comand Functions
BIT15
Reserved
BIT14
Reserved
BIT13
Reserved
BIT12
Reserved
BIT11
Reserved
BIT10
Reserved
BIT9
Reserved
BIT8
Reserved
BIT7
Reserved
BIT6
Fahrenheit or Celsius Enable
0 = Celsius Enable
1 = Fahrenheit Enable
BIT5
Force disinfect function(0 = OFF 1 = ON)
BIT4
Remoter ONOFF (0 = OFF 1 = ON)
BIT3
Remoter OnOff signal (0 = OFF 1 = ON)
0 = panel
’
s onoff signal check can work
1 = panel
’
s onoff signal check can't work
BIT2
SG Command (same of digital input)
BIT1
EVU command (same of digital input)
BIT0
Solar signal (control Bit 1 and 2)
0 = solar panel can work
1 = solar panel can't work
4
hour
Decimal
5
minute
Decimal
15 MODBUS PROTOCOL
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