Mitsubishi Electric FR-E540-0.4K-EC Instruction Manual page 135

Note: 1. The inverter station numbers may be set between H00 and H1F (stations 0
and 31) in hexadecimal.
2. *3 indicates the control code.
3. *4 indicates the CR or 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.
Also, the presence and absence of the CR and LF codes can be selected
using Pr. 124.
4. At *5, when Pr. 123 "waiting time setting" ≠ 9999, create the communication
request data without "waiting time" in the data format.
(The number of characters is decremented by 1.)
2) Send data from inverter to computer during data write
[No data error detected]
Inverter
*3
station
Format C
ACK
number
1 2
3) Reply data from inverter to computer during data read
[No data error detected]
Inverter
*3
Format E
station
STX
number
1 2
Inverter
*3
Format E'
station
STX
number
1 2
Inverter
*3
station
Format E"
STX
number
1 2
4) Send data from computer to inverter during data read
[No data error detected]
Inverter
*3
station
Format G
ACK
number
1 2
(4) Data definitions
1) Control codes
Signal ASCII Code
STX
ETX
ENQ
ACK
LF
CR
NAK
[Data error detected]
*4 Format D
←Number of characters
3 4
Read
*3
data ETX
3 4 5 6 7 8
Read
Sum
*3
data check
ETX
3 4 5 6 7 8
Read
data
3 4 5 6 7 8
[Data error detected]
*4 Format H
←Number of characters
3 4
H02 Start of Text (Start of data)
H03 End of Text (End of data)
H05 Enquiry (Communication request)
H06 Acknowledge (No data error detected)
H0A Line Feed
H0D Carriage Return
H15 Negative Acknowledge (Data error detected)
Inverter
Error
*3
station
code
NAK
number
1 2 3 4
[Data error detected]
Sum
*4
check
9 10 11
*4
9
Sum
*3
*4
check
ETX
9 10 11 12 13
Inverter
*3
station
*4
NAK
number
1 2 3 4
Description
120
PARAMETERS
*4
←Number of characters
5
Format F
Inverter
Error
*3
station
code
NAK
number
1 2 3 4
←Number of characters
*4
5
4