NVF5 Series User Manual Appendix A RS485-MODBUS
Communication Instructions
Description
Address
Explanation
Power
Down
Saving
Read-write
property
function code.
Information feedback to
the host computer is the
dexadecimal data
instead of fault code.
A.7 Parameter Management
Modbus master station can obtain the parameter group quantity and group number
from the CPU through the corresponding command, as well as the internal parameter
number . The communication function code is provided as “0x03”, and the communication
address is defined in Table A.5.
Table A.5 Description of Parameter Management
Function
Description
Communication
Address
Description
Data Explanation
Comments
Obtain the group
number
0x4200
Group number value
of the parameters
contained in the
system
Paramter group
number value
contained in the
inverter
Obtain Group 1
number value
0x4201
Group number value
of Group 1
Group number
value is consistent
with the value
obtained by
0x4200
Obtain Group 2
number value
0x4202
Group number value
of Group 2
Obtain Group 1
number value
0x4203
Group number value
of Group 3
……
……
……
Obtain Group
Max number
value
0x42xx
（
xx =Max
）
Group number value
of Group Max
Obtain the
number of
parameters
in Group 1
parameters
0x4300
Obtain the number of
parameters in Group
1
Group number
value is consistent
with the value
obtained by
0x4200
Obtain the
number of
parameters
in Group 2
parameters
0x4301
Obtain the number of
parameters in Group
2
Obtain the
number of
parameters
in Group 3
parameters
0x4302
Obtain the number of
parameters in Group
3
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