Specifications

Chapter7CommunicationProtocolVFD‐G7SeriesFrequencyInverterOperationManual

162
Function Address Data and meaning
Upper-limit
frequency
setting value
2004H
0.0% ～ 100.0% ， when setting 100.0% ， the
upper-limit frequency is equal to the max output
frequency.
Function
parameter
Function
code 16
system is
FX.YZ
High
address：FX
Low
address ：
YZ
Corresponding function code setting
☞Notice： ThelifeoftheEEPROMwillbeshortenedifEEPROMisfrequentlystored.Sothe
users should reduce the times of storing EE PROM. And some parameter under
communicationmodeisnoneedtostore,andjustneedtochangethevalueinRAM.When
writingthe
RAMvalueofparameter,youcouldjustchangetheregisterhighaddressfromF
toOisok.IfwritingtheRAMofF1.11,theregisteraddressis010B.Buttheexpressmethod
ofregisteraddresscouldnotusetoreadthefrequencyinverterfunctionparameter.
（2）Frameincommunication

Theframethatslavemachinesendtofrequencyinverter：
Slave
address
Function
code
Parameter
address high
byte
Parameter
address low
byte
Data
high
byte
Data
low
byte
Parity
bit high
byte
Parity
bit
low
byte
Frequency inverter corresponds the frame content of upper machine: frequency
inverterreturnthedataissamewithuppermachine.
（3）Forexample
Example1：
The dec time of frequency inverter should change to 30.0s through upper machine,