80 SUNFAR Self-Defined Communication Protocol
E500 Series Universal Low-Power Inverter
1.3.4 Command classification 3- Modify function code parameters in
inverter RAM area.
1.3.5 Command classification 5- Modify function code parameters in
inverter EPROM area
Main machine sending frame size is 18 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 14 15 16 17
Frame header
Slave address
Slave address
3
or
5
Operation command
Operation command
Data classification
Data address
Data address
Setting Data
setting Data
Setting data
Setting data
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
Data classification
Data address
Data address
Setting data
Setting data
Setting data
Setting data
Checksum
Checksum
Checksum
Checksum
Frame end
Definition of data classification:
Function
code block
F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FC FE FF FH FL FP
Data
classification
0 1 2 3 4 5 6 7 8 9 A B C D E F
The relative address of function code, e.g. the data address of F0.08, F1.08,
F2.08 and F#.08 is 8, but data classification varies.
Note: When slave machine fails to complete main machine command, the
feedback setting data is 0000.
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