SUNFAR Self-Defined Communication Protocol 75
(5) Slave machine response
The response of slave machine to data sent by main machine is mainly used to
feedback implementation of slave machine to command frame of main machine,
which exists in all types of data frame. The slave machine response is defined as
below:
Data
Meaning
Slave machine receives data,
0
normal operation
Slave machine running forbids
2
modifying data
Try to read-write reserve/hidden
4
parameters
The specified parameter code or
6
address are illegal
(over ranging)
Illegal command classification or
8
operation command
Data
1
3
5
7
9～F
Meaning
The received data range is over
ranging
Data modification is forbidden
by password
Reserve
When transmitting data in ASC
II code, illegal ASC II
character exists.
Reserve
When the data of response byte of slave machine is "6-8", the
response frame size is 11 bytes.
The frame format is shown as below:
0
1
2
3
4
5
6
7
8
9 10
0
0
Command / Response
Station address
Check area
0DH
area
E550 Series Universal Low-Power Inverter
