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Data reading format
Communication request data from the computer to the inverter 1)
Format
1
2
ENQ
Inverter
B
station number
Reply data from the inverter to the computer 3) (No data error detected)
Format
1
2
STX
Inverter
E
station number
STX
Inverter
E1
station number
STX
Inverter
E2
station number
Format
1
2
STX
Inverter
E3
station number
Reply data from the inverter to the computer 3) (With data error)
Number of Characters
Format
1
2
NAK
Inverter
D
station number
Send data from the computer to the inverter 5)
Number of Characters
Format
1
2
C
ACK
Inverter
(Without
station number
data error)
F
NAK
Inverter
(With data
station number
error)
Indicate a control code
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
Set waiting time. When the Pr. 123 PU communication waiting time setting is other than 9999, create the communication request data without "waiting time"
in the data format. (The number of characters decreases by 1.)
CR, LF code
When data is transmitted from the computer to the inverter, codes CR (carriage return) and LF (line feed) are automatically set at the end of a data group
on some computers. In this case, setting must also be made on the inverter according to the computer. Whether the CR and LF codes will be present or
absent can be selected using Pr. 124 PU communication CR/LF selection.
Number of Characters
3
4
5
6
Instruction code
Number of Characters
3
4
5
6
Read data
ETX
Read data
Read data
Number of Characters
3
4 to 23
Read data (Inverter model information)
3
4
5
Error
code
3
4
Communication operation and setting
7
8
9
Sum
check
7
8
9
ETX
Sum
check
Sum
check
ETX
ETX
10
11
12
13
Sum
check
24
25
26
27
Sum
check
191
4
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