Mitsubishi Electric FR-E700 Series Instruction Manual page 386

Communication operation and setting
● Data reading format
Communication request data from the computer to the inverter ³
Format
Reply data from the inverter to the computer » (No data error detected)
Format
Format
Reply data from the inverter to the computer » (Data error detected)
Format
Send data from the computer to the inverter ´
Format
(No data error detected)
(Data error detected)
Indicate a control code (Refer to Tab. 6-71.)
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
When Pr. 123, Pr. 337 "Waiting time setting" ≠ 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".
6 - 242
1 2
Inverter station
B
ENQ
number
1 2
Inverter station
E
STX
number
Inverter station
E1
STX
number
Inverter station
E2
STX
number
1 2
Inverter station
E3
STX
number
Number of Characters
1 2
Inverter station
D
NAK
number
Number of Characters
1 2
Inverter station
C
ACK
number
Inverter station
F
NAK
number
Number of Characters
3 4 5 6
Waiting
Instruction
code
time
Number of Characters
3 4 5 6
Read data
Read data
ETX
Read data
Number of Characters
3 4–23
Read data (Inverter type information)
3 4 5
Error
code
3 4
7 8 9
Sum check
7 8 9 10
Sum check
ETX
Sum check
ETX
24
ETX
Parameter
11 12 13
Sum check
25 26 27
Sum check