Mitsubishi Electric 800 Series Instruction Manual page 38

• Data writing format
a. Communication request data from the computer to the inverter
Format
1 2 3
ENQ Inverter Instruction
A
station No. code
 
ENQ Inverter Instruction
A1
station No. code
 
ENQ Inverter Instruction
A2
station No. code
 
c. Reply data from the inverter to the computer (No data error detected)
Format
1 2 3
ACK Inverter

C

station No.
 
Send
STX Inverter
C1 data
station No
 
type
c. Reply data from the inverter to the computer (Data error detected)
Format
1
D NAK


Indicates a control code.

Specifies the inverter station numbers in the range of H00 to H1F (stations 0 to 31) in hexadecimal.

When Pr.337 (Waiting time setting) ≠ 9999, create a communication request data without "waiting time" in the data format. (The number
of characters decreases by 1.)

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 be also made on the inverter according to the computer.
Whether the CR and LF codes will be present or absent can be selected using Pr.341 (CR/LF selection).
Number of characters
4 5 6 7 8

Data


Data

Send
Receive

data
 data
type
type
Number of characters
4 5 6 7 8
Receive
Error Error
Data1
data
code1 code2
type
Number of characters
2 3

Error code
Inverter station No

9 10 11 12 13
Sum check

Sum check

Data1 Data2
9 10 11 12 13
Data2
4 5


14 15 16 17 18
Sum check
14 15 16 17 18
ETX
Sum check


PARAMETER
19

19

4
37