2. Function codes
Function code
0×03
None
0×04
None
0×06
None
0×08
0×00, 01, 02, 04, 0A, 0B, 0C, 0D, 0E, 0F, 11, 12, 14
0×0B
None
0×0C
None
0×10
None
3. Address assignment table
Register
address
Holding Register
40001
40002
40003
40004
40005
40006
40007
40008
40009 ~ 40019
40020
40021
40022
40023
Sub function code
Read / Write
R / W
Operation / stop setting
Operation mode setting
Set temperature setting
Automatic cooling set temperature
(Dual set point) setting
Automatic heating set temperature
(Dual set point) setting
Fan speed setting
Operation prohibition setting
Analogue Input Capacity Control*
Reserved
CN90 DI1 (Safety contact input)
CN90 DI2 (External error input)
CN90 DI3 (Forced Thermo OFF input)
CN90 DI4 (Notice input)
– 46 –
Function name
Read holding register
Read Input register
White single holding register
Diagnostics
Get Comm. Event Counter
Get Comm. Event Log
Write multiple holding registers
Data
Byte
0 : STOP
2
1 : OPERATE
1 : HEATING MODE
2
2 : COOLING MODE
3 : DRY MODE
2 10 times values
2 10 times values
2 10 times values
1 : FAN STOP
2 : FAN AUTO
2
3 : FAN SPEED [HH]
4 : FAN SPEED [H]
5 : FAN SPEED [L]
Bit0 : Operation STOP
Bit1 : Operation Mode
2
Bit2 : temperature setting
Bit4 : FAN
2 0 ~ 15
2 0 : OFF
2 0 : OFF
2 0 : OFF
2 0 : OFF
Data Definition and remarks
1 : ON
1 : ON
1 : ON
1 : ON