Communication parameter group 07
PARAMETER DESCRIPTION 207
No. Action content
Run
command
Frequency
write
Parameter
write
Inverter
reset
Monitoring Parameter
readout
①
Upper controller user program sends a
communication request to inverter
A
A
A
A
B
B
②
Inverter data processing time
Yes
Yes
Yes
No
Yes
Yes
③
Inverter return
information (check
data ① for error)
No error (accept
request)
C
C
C
No
E
E
Error (request
denied)
D
D
D
No
D
D
④
Upper controller processing delay time
No
No
No
No
No
No
⑤
Response transferred
by upper controller to
returned information
③ (check data ③
for error)
No error (not
processed)
No
No
No
No
C
C
Error (output
③)
No
No
No
No
F
F
①Data of communication request sent by upper controller to inverter.
Format
Data number
1
2
3
4
5
6
7
8
9
10
11
12
13 14
A
(Data write-in)
ENQ
*1)
Inverter
station
number
Command
code
Waiting
time *2)
Data
Check code
Sum check*7)
End
symbol*3)
B
(Data read-out)
ENQ
*1)
Inverter
station
number
Command
code
Waiting
time *2)
Check code
Sum check*7)
End
symbol*3)
③Inverter return information
Data write-in
Format
Data number
1
2
3
4
5
6
C(data is correct)
ACK*1)
Inverter station number End symbol*3)
D(data error)
NAK*1)
Inverter station number Error code*5)
End symbol*3)
Data read-out
Format
Data number
1
2
3
4
5
6
7
8
9
10
11
12 13
E(data is
correct)
STX*1)
Inverter station
number
Data read-out
Unit *4)
ETX
Check code
Sum check*7)
End
symbol *3)
D(data error)
NAK*1)
Inverter station
number
Error
code *5)
End symbol
*3)
⑤Reply data from upper controller to inverter during data read-out.
Format
Data number
1
2
3
4
5
C(data is correct)
ACK*1)
Inverter station number
End symbol *3)
F(data error)
NAK*1)
Inverter station number
End symbol *3)
*1) Control code
Signal ASCII Code Content
Signal
ASCII Code Content
NUL
H00
NULL
ACK
H06
Acknowledge
STX
H02
Start of Text
LF
H0A
Line Feed
ETX
H03
End of Text
CR
H0D
Carriage Return
ENQ
H05
Enquiry
NAK
H15
Negative Acknowledge
