Mitsubishi Electric FR-E700 Instruction Manual page 212

Data reading format
1) Communication request data from the computer to the inverter
Format
1
ENQ
B
∗1
3) Reply data from the inverter to the computer (Without data error)
Format
1
STX
E
∗1
STX
E1
∗1
STX
E2
∗1
3) Reply data from the inverter to the computer (With data error)
Format
1
NAK
D
∗1
5) Send data from the computer to the inverter
Number of Characters
Format
1
C
ACK
∗1
(Without data error)
F
NAK
∗1
(With data error)
∗1
Indicate a control code
∗2
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
∗3
When the Pr. 123 (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.)
∗4
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 (CR, LF selection).
Number of Characters
2 3 4 5
Inverter
station number Instruction code
∗2
2 3 4 5
Inverter
station number
Read data
∗2
Inverter
station number Read data
∗2
Inverter
station number
∗2
Number of Characters
2 3 4 5
Inverter
Error
∗4
station number
code
∗2
2 3 4
Inverter
∗4
station number
∗2
Inverter
∗4
station number
∗2
Communication operation and setting
6 7 8 9
Sum
∗3 ∗4
check
Number of Characters
6 7 8 9
ETX
∗1
check
ETX
Sum
∗4
∗1
check
Read data
10 11 12 13
Sum
∗4
ETX
Sum
∗4
∗1
check
4
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