Mitsubishi Electric FR-A800, Instruction Manual

Page: 794 / 1042

(N) Operation via communication and its settings Parameters
5 - 614
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Data writing format
– Communication request data from the computer to the inverter
– Reply data from the inverter to the computer (No data error detected)
– Reply data from the inverter to the computer (Data error detected)
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).
Format
Number of characters
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
A
ENQ Inverter
station No.
Instruction
code
Data Sum check
#
A1
ENQ Inverter
station No.
Instruction
code
Data Sum check
#
A2
ENQ Inverter
station No.
Instruction
code
Send
data
type
Receive
data
type
Data1 Data2 Sum check
#
Format
Number of characters
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
C
ACK Inverter
station No.
#
C1
STX Inverter
station No.
Send
data
type
Receive
data
type
Error
code
1
Error
code
2
Data1 Data2
ETX
Sum check
#
Format
Number of characters
1 2 3 4 5
D
NAK Inverter station No.
Error code
#