Mitsubishi FR-A500 Series 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 from the inverter according to the computer.
Also, the presence and absence of the CR and LF codes can be selected using Pr. 124.
4. *5: When Pr. 123 "waiting time setting" ≠ 9999, create the communication request data
with no "waiting time" in the data format. (The number of characters decreases by 1.)
2) Reply data from inverter to computer during data write
[No data error detected]
Format C
3) Reply data from inverter to computer during data read
[No data error detected]
*3
Format E
STX
1
*3
Format E'
STX
1
4) Send data from computer to inverter during data read
[No data error detected]
Format G
( 4 ) Data definitions
1) Control codes
Signal ASCII Code
STX H02
ETX H03
ENQ H05
ACK H06
LF H0A
CR H0D
NAK H15
2) Inverter station number
Specify the station number of the inverter which communicates with the computer.
3) Instruction code
Specify the processing request (e.g. operation, monitoring) given by the computer to the inverter. Hence,
the inverter can be run and monitored in various ways by specifying the instruction code as appropriate.
(Refer to page 218)
4) Data
Indicates the data such as frequency and parameters transferred to and from the inverter. The definitions
and ranges of set data are determined in accordance with the instruction codes. (Refer to page 218)
Inverter
*3
*4
station
ACK
number
←Number of characters
1 2 3 4
Inverter
station Read data
ETX
number
2 3 4 5 6 7
Inverter
Read *3
Sum
station
data ETX
check
number
2 3 4 5 6 7
Inverter
*3
station *4
ACK
number
←Number of characters
1 2 3 4
Start of Text (Start of data)
End of Text (End of data)
Enquiry (Communication request)
Acknowledge (No data error detected)
Line Feed
Carriage Return
Negative Acknowledge (Data error detected)
[Data error detected]
*3
Format D
NAK
1 2
[Data error detected]
*3 Sum
*4
check
8 9 10 11
*4
←Number of characters
8 9
[Data error detected]
*3
Format H
NAK
1
Description
122
PARAMETERS
Inverter
Error
station
*4
code
number
←Number of characters
3 4 5
Format F
Inverter
*3 Error
station
NAK code
number
1 2 3 4
Inverter
station *4
number
←Number of characters
2 3 4
*4
5