MODBUS Protocol 87
(2) Function code 06: Rewrite operation command, running frequency and
functional parameter of single inverter.
Sent by main machine:
PDU PART
06
Data length(Byte) 1
Register initial address
High
Low
1
1
Register data
High
Low
1
1
Slave machine response:
PDU PART 06
Data length(Byte) 1
Register initial address
High
Low
1
1
Register data
High
Low
1
1
(3) Function code 10: Rewrite operation command, running frequency and
functional parameter of multiple inverters.
Sent by main machine:
PDU PART
Register initial
10
address
High Low
Data length(Byte) 1 1
1
Number of
registers
High Low
1
1
Content
byte
count
1
Register
content
2*Number
of registers
Slave machine response:
PDU PART 10
Data length(Byte) 1
Register initial address
High
Low
1
1
Number of registers
High
Low
1
1
Notice: the inverter starts to store data from the register with lowest address to
that with the highest address, and 6 function codes can be saved at most in one
time; in case of identifying some error, the slave machine will make objection
response.
Objection response:
PDU PART
Data length(Byte)
0x80＋Function code
1
Objection code
1
Objection code indicates error category:
Objection code
01
02
03
Corresponding error
Illegal function code
Illegal data address
Overhanging data
E550 Series Universal Low-Power Inverter
