78 SUNFAR Self-Defined Communication Protocol
E500 Series Universal Low-Power Inverter
Data classification
(Sent by main machine)
Feature information (Slave machine response )
6 7 8 9 10 11 12
2
Read program
version of slave
machine
Reserve Reserve # # # #
3
Read operation
information of
slave machine
Main
machine
control
Main
machine
frequency
setting
Reserve Reserve Reserve Reserve
4～F Reserve # # # # # #
For example: If the data classification value in the frame sent by main machine
is 0, the
feedback information of slave machine is 400015,which means that 4
represents voltage class–380V; 0 is feature information value; 0015 represents
power–1.5kw.
1.3.2 Command classification 1- Read running parameters of slave machine
Main machine sending frame size is 14 bytes, while slave machine response
frame size is 18 types.
Sent by main machine
0 1 2
3 4 5 6 7 8 9 10 11 12 13
Frame header
Slave address
Slave address
1
Operation command
Operation command
0
Data subentry
Data subentry
Checksum
Checksum
Checksum
Checksum
Frame end
Slave machine response
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Frame header
Slave address
Slave address
Slave machine response
Status feedback
Status feedback
0
Data subentry
Data subentry
Running data
Running data
Running data
Running data
Checksum
Checksum
Checksum
Checksum
Frame end
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