11
4-1-2 Option frame
Selecting request frame [Host
⇒
Inverter]
Value
Byte Field
ASCII type Hexadecimal
Description
0
SOH
SOH 01
H
Start of header
1 Station address ’0’–’3’,’9’
30
H
–33
H
, 39
H
Station address of inverter (Decimal:
×
10)
2 ’0’–’9’ 30
H
–39
H
Station address of inverter (Decimal:
×
1)
3
ENQ
ENQ 05
H
Transmission request
4 Command
‘a’
‘e’
‘f’
‘m’
61
H
65
H
66
H
6D
H
Request command
Frequency setting (p.u.)
Frequency setting
Operation command
Alarm reset
5 Data ’0’–’F’ 30
H
–3F
H
1st character of data (Hexadecimal:
×
1000
H
)
6 ’0’–’F’ 30
H
–3F
H
2nd character of data (Hexadecimal:
×
100
H
)
7 ’0’–’F’ 30
H
–3F
H
3rd character of data (Hexadecimal:
×
10
H
)
8 ’0’–’F’ 30
H
–3F
H
4th character of data (Hexadecimal:
×
1
H
)
9
ETX
ETX 03
H
End of text
10 BCC ’0’–’F’ 30
H
–3F
H
Check sum 1 (Hexadecimal:
×
10
H
)
11 ’0’–’F’ 30
H
–3F
H
Check sum 2 (Hexadecimal:
×
1
H
)
Selecting response frame [Inverter
⇒
Host]
Value
Byte Field
ASCII type Hexadecimal
Description
0
SOH
SOH 01
H
Start of header
1 Station address ’0’–’3’, ’9’
30
H
–33
H
, 39
H
Station address of inverter (Decimal:
×
10)
2 ’0’–’9’ 30
H
–39
H
Station address of inverter (Decimal:
×
1)
3
ACK/NAK
ACK
NAK
06
H
15
H
Transmission response
Acknowledge: When there are no receiving error
and logical error
Negative Acknowledge:
When there is a logical error in
the request
4 command
‘a’
‘e’
‘f’
‘m’
61
H
65
H
66
H
6D
H
Request command
Frequency setting (p.u.)
Frequency setting
Operation command
Alarm reset
5
ETX
ETX 03
H
End of text
6 BCC ’0’–’F’ 30
H
–3F
H
Check sum 1 (Hexadecimal:
×
10
H
)
7 ’0’–’F’ 30
H
–3F
H
Check sum 2 (Hexadecimal:
×
1
H
)
0 1 2 3 4 5 8 9 10 11
1 2 1 1 4 1 2 (byte)
SOH
Station address
ENQ
Com-m
and
Data
ETX
BCC
Area included to BCC
SOH
Station addres
ACK/NAK
Com-m
and
ETX
BCC
0 1 2 3 4 5 6 7
1 2 1 1 1 2 (byte)
Area included to BCC
To Next Page
Loading...
