Mitsubishi Electric FR-A700 Technical Manual page 412

Reply data from the inverter to the computer 3) (With data error)
Number of Characters
Format
1 2 3
Inverter
NAK
D
station
*1
number *2
*1 Indicate a control code
*2 Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
*3 Set waiting time. When the [Pr. 123, 337 (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, 341 (CR, LF selection)].
• Data reading format
Communication request data from the computer to the inverter 1)
Format
1 2
ENQ
B
*1 station number *2
Reply data from the inverter to the computer 3) (No data error detected)
Format
1 2
STX
E
*1 station number *2
STX
E1
*1 station number *2
STX
E2
*1 station number *2
Format
1 2
STX
E3
*1 station number *2
Reply data from the inverter to the computer 3) (With data error)
Number of Characters
Format
1 2
NAK
D
*1 station number *2
Send data from the computer to the inverter 5)
Number of Characters
Format
1 2
C
ACK
(Without
*1 station number *2
data error)
F
NAK
(With data
*1 station number *2
error)
*1 Indicate a control code
*2 Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
*3 Set waiting time. When the [ Pr. 123, 337 (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, 341 (CR, LF selection)].
4 5
Error
*4
code
Number of Characters
3 4 5
Inverter
Instruction code
3 4 5
Inverter
Read data
Inverter
Read data
Inverter
3
Inverter
Read data (Inverter type information)
3 4 5
Inverter Error
*4
code
3 4
Inverter
*4
Inverter
*4
6 7 8
Sum
*3
check
Number of Characters
6 7 8
ETX
*1
ETX Sum
*1 check
Read data
Number of Characters
4 to 23
446
PARAMETER
9
*4
9 10 11 12
Sum
*4
check
*4
ETX
Sum
*1 check
24 25 26
ETX Sum
*1 check
13
*4
27
*4