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4. Parameter description
Parameter
●
For multi-inverter connecting to computer
computer
D
A
+
D
B
-
Station number
1
Inverter 1
RS-485
DATA+
/
converter
RS-232
DATA-
RS-485
RS-232
D
A
+
D
B
-
Inverter 2
2
D
A
+
D
B
-
Inverter 3
3
Station number
Station number
● Two communication protocol of SE2-type inverter, there are Shihlin protocol and Modbus
protocol.
1. Shihlin protocol
● Communication between PC and inverter, ASCII code (hexadecimal) converted automatically.
● PC Data communication between the inverter, please follow the steps.
Communication type with or without data format for the step:
No.
Description
Operation
Command
Operation
Frequency
Write
Parameter
Reset
Monitoring
Read Out
Parameter
①
Computer
send
out
communication
request
to
inverter
A
A
A
A
B
B
②
Inverter Data Processing time
yes
yes
yes
no
yes
yes
③
Data responded
From inverter
(check fault of
①
)
No error
(request
accepted)
C
C
C
no
E
E
Error
(request
rejected)
D
D
D
no
D
D
④
Computer data processing time
no
no
no
no
no
no
⑤
Data Responded
from PC (check
fault of
③
)
No error
(no process)
no
no
no
no
C
C
Error
(output
③
)
no
no
no
no
F
F
PC
PC
inverter
inverter
①
②
③
④
⑤
time
write date
read date
