SUNFAR Self-Defined Communication Protocol 77
1.3 Description of frame format
When frame header, frame end and checksum in data frame sent
by main machine are abnormal, slave machine possibly fails to
make normal response.
1.3.1 Command classification 0- Read status and feature information of slave
machine
Main machine sending frame size is 14 bytes, while slave machine response frame
size is 18 types.
0 1 2 3 4 5 6 7 8 9 10 11 12 13
0
00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Note: In accordance with different data classification value in the frame sent
by main machine, the slave machine will feedback different feature information.
Data classification
(Sent by main
machine)
6
Read model
0 information of
slave machine
Read series
1 information of
slave machine
Read program
2 version of slave
machine
7
Voltage
class
Reserve
Reserve
Feature information (Slave machine response )
8
9
10
11
0
Power
Power
Power
Reserve
Reserve Reserve
Reserve
Reserve
#
#
#
12
Power
Reserve
#
E550 Series Universal Low-Power Inverter
