Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации, Страница: 358 / 512

Communication operation and settings Parameter
6 - 208
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Data reading 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)
Send data from the computer to the inverter during data read
Indicate a control code (Refer to Tab. 6-53.)
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
Set waiting time.
When Pr. 123 "Waiting time setting"
≠
9999, create the 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 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 "CR, LF selection"
Format
Number of Characters
1 2 3 4 5 6 7 8 9
B ENQ
Inverter
station
number
Instruction
code
Waiting
time
Sum check
Format
Number of Characters
1 2 3 4 5 6 7 8 9 10 11 12 13
E STX
Inverter
station
number
Read data ETX Sum check
E1 STX
Inverter
station
number
Read data ETX Sum check
E2 STX
Inverter
station
number
Read data ETX Sum check
Format
Number of Characters
1 2 3 4 to 23 24 25 26 27
E3 STX
Inverter
station
number
Read data (Inverter type information) ETX Sum check
Format
Number of Characters
1 2 3 4 5
D NAK
Inverter
station
number
Error
code
Format
Number of Characters
1 2 3 4
C
(No data
error
detected)
ACK
Inverter
station
number
F
(Data error
detected)
NAK
Inverter
station
number