8
4-1-1 Standard frame
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
‘R’
‘W’
‘A’
‘E’
52
H
57
H
41
H
45
H
Request command
Polling (reading)
Selecting (writing)
High-response selecting (writing)*1
Alarm reset
5 Type
‘F’
’E’
‘C’
‘P’
‘H’
‘A’
‘o’
‘S’
‘M’
46
H
45
H
43
H
50
H
48
H
41
H
6F
H
53
H
4D
H
Function type
Fundamental Functions
Extension Terminal Functions
Control Functions of Frequency
Motor Parameters
High performance Functions
Alternative Motor Parameters
Optional Functions
Setting data Functions
Monitoring data Functions
6 Function code ’0’–’4’ 30
H
–34
H
Function code (Decimal:
×
10)
7 ’0–’9’ 30
H
–39
H
Function code (Decimal:
×
1)
8
SP
‘
’ 20
H
Not use (fixed space)
9 Data ’0’–’F’ 30
H
–3F
H
1st character of data (Hexadecimal:
×
1000
H
)
10 ’0’–’F’ 30
H
–3F
H
2nd character of data (Hexadecimal:
×
100
H
)
11 ’0’–’F’ 30
H
–3F
H
3rd character of data (Hexadecimal:
×
10
H
)
12 ’0’–’F’ 30
H
–3F
H
4th character of data (Hexadecimal:
×
1
H
)
13
ETX
ETX 03
H
End of text
14 BCC ’0’–’F’ 30
H
–3F
H
Check sum 1 (Hexadecimal:
×
10
H
)
15 ’0’–’F’ 30
H
–3F
H
Check sum 2 (Hexadecimal:
×
1
H
)
*1) This is used to read out the monitor during writing a function taking for long time (several seconds) (see time
out list of "4.3 Procedure on host side"). The response of the inverter is not returned till finish of writing of the
inverter by the normal writing command 'W', but, since the inverter immediately returns at the time point of
receiving the writing request under the high speed response command 'A', the communication can continue even
during writing. To judge the finish of writing, call BUSY flag during writing (M14: 15th bit). If trying to newly write
during writing, NAK response (error during writing) is issued.
SOH
Station address
ENQ