Mitsubishi Electric FR-A820-00046 Instruction Manual page 841

Parameters
● Data writing format
– ³ Communication request data from the computer to the inverter
Format
A
A1
A2
– » Reply data from the inverter to the computer (No data error detected)
Format
C
C1
– » Reply data from the inverter to the computer (Data error detected)
Format
D
Indicates a control code.
Specifies the inverter station numbers in the range of H00 to H1F (stations 0 to 31) in hexadecimal.
When Pr. 123 and 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. 124 and Pr. 341 (CR/LF selection).
FR-A800
1 2 3 4 5
ENQ Inverter
Instruction
code
station No.
ENQ Inverter
Instruction
code
station No.
ENQ Inverter
Instruction
code
station No.
1 2 3 4 5
ACK Inverter
station No.
Error
Send Receive
STX Inverter
code
data data
station No.
type type
Number of characters
1 2 3
Error code
NAK Inverter station No.
(N) Operation via communication and its settings
Number of characters
6 7 8 9 10 11
Data Sum check
Data Sum check
Send Receive
Data1
data data
type type
Number of characters
6 7 8 9 10 11
Error
code Data1
1 2
4 5
12 13 14 15 16 17
Data2 Sum check
12 13 14 15 16 17
ETX
Data2 Sum check
18 19
18 19
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