3) data format – MITSUBISHI ELECTRIC FR-S520E User Manual
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(3) Data format
Data used is hexadecimal.
Data is automatically transferred in ASCII between the computer and inverter.
Data format types
1) Communication request data from computer to inverter
2) Reply data from inverter to computer during data write
3) Reply data from inverter to computer during data read
REMARKS
*1. Setting any of "0.1" to "999" in Pr. 37 "speed display" and "1" in instruction code "HFF" sets
the data format to A" or E" (6-digit data). Also, the output frequency turns to a speed
display, which is valid in 0.01r/min increments. (The third decimal place is invalid.) If the
instruction code "HFF" is other than "1", the display is in 1r/min increments and a 4-digit
data format can be used. Reply data is given in format E if the requested monitor data has
4 digits, in format E' if the data has 2 digits, or in format E" if the data has 6 digits.
*2. The data format to read/write Pr. 37 "speed display" is always E"/A" (6-digit data).
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Format A
Format A'
Format A"
[Data write]
[Data read]
Format B
Number of
characters
Number of characters
*1
ENQ
*2
Inverter
station
number
Instruction
code
Data
*4
Number
of
characters
Sum
check
Number of characters
1
2
3
4
5
6
7
8
9
10 11
*1
ENQ
*2
Inverter
station
number
Instruction
code
Data
*4
Sum
check
1
2
3
4
5
6
7
8
9
10 11 12 13
*1
ENQ
*2
Inverter
station
number
Instruction
code
Data
*4
Sum
check
1
2
3
4
5
6
7
8
9
*1
ENQ
*2
Inverter
station
number
Instruction
code
*4
Sum
check
*3
Waiting
time
*3
Waiting
time
*3
Waiting
time
*3
Waiting
time
Error
code
*2
Inverter
station
number
*1
ACK
*4
Number
of
characters
Format C
*2
Inverter
station
number
Number
of
characters
*1
NAK
*4
Format D
[No data error detected]
[Data error detected]
1
2
3
4
1
2
3
4
5
Format E''
Format E'
*1
ETX
Number
of
characters
Format F
*1
STX
[Data error detected]
[No data error detected]
Read
data
Number of
characters
1
2
3
4
5
6
7
8
9
10 11 12 13
*2
Inverter
station
number
*4
Sum
check
Format E
*1
STX
*1
ETX
Read
data
1
2
3
4
5
6
7
8
9
10 11
*2
Inverter
station
number
*4
Sum
check
Error
code
*2
Inverter
station
number
*1
NAK
*4
1
2
3
4
5
*1
STX
*1
ETX
Read
data
1
2
3
4
5
6
7
8
9
*2
Inverter
station
number
*4
Sum
check