SUNFAR Self-Defined Communication Protocol 81
E500 Series Universal Low-Power Inverter
1.3.6 Command classification 4- Send control command
Main machine sending frame size is 15 bytes, while slave machine response
frame size is 18 types. In normal operation of inverter, the type of frame data is
applicable to maximum extent.
Sent by main machine
0 123 45 67891011 12 13 14
Frame header
Slave address
Slave address
4
Operation command
Operation command
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
0
Monitoring item
Monitoring item
Running data
Running data
Running data
Running data
Checksum
Checksum
Checksum
Checksum
Frame end
The setting data in the frame sent by main machine is the set frequency sent
from main machine to slave machine.
The running data in the slave machine response frame is running parameter sent
by main machine, which is determined by setting content of monitoring item
(function code: [F3.08]) in inverter functional parameter list, and slave machine
responds the item monitoring value.
The inverter functional parameter list refers to Chapter 5 of
E500 series inverter operation manual: Functional parameter
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