Mitsubishi Electric FR-E700 Instruction Manual page 402

Communication operation and setting
● Data writing format
Communication request data from the computer to the inverter
Format
A
A1
A2
A3
Reply data from the inverter to the computer
Format
C
C1
Reply data from the inverter to the computer
Format
D
Indicate a control code (Refer to Tab. 6-74.)
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
When Pr. 123, Pr. 337 "Waiting time setting"
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 - 248
1 2 3 4 5
Inverter station Waiting
Instruction
ENQ
code
number time
Inverter station Waiting
Instruction
ENQ
code
number time
Inverter station Waiting
Instruction
ENQ
code
number time
Inverter station Waiting
Instruction
ENQ
code
number time
1 2 3 4 5
Inverter station
ACK
number
Send Receive Error
Inverter station
data data code
STX
number
type type
Number of Characters
1 2 3 4 5
Inverter station
Error
NAK
code
number
Number of Characters
6 7 8 9 10 11
Data Sum check
Data Sum check
Data
Send Receive
data data Data 1
type type
»
(No data error detected)
Number of Characters
6 7 8 9 10 11
Error
code Data 1
1 2
»
(Data error detected)
9999, create the communication request data
³
12 13 14 15 16 17
Sum check
Data 2 Sum check
12 13 14 15 16 17
Data 2 Sum check
ETX
Parameter
18 19
18 19