Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Parameter Communication operation and settings
FR-D700 SC EC 6 - 207
●
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)
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 10 11 12 13 14 15 16 17 18 19
A
ENQ
Inverter
station
number
Instruction
code
Data
Sum
check
A1
ENQ
Inverter
station
number
Instruction
code
Data
Sum
check
A2
ENQ
Inverter
station
number
Instruction
code
Data
Sum
check
A3
ENQ
Inverter
station
number
Instruction
code
Send
data
type
Recei-
ve
data
type
Data 1 Data 2
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
number
C1
ACK
Inverter
station
number
Send
data
type
Recei
ve
data
type
Error
code 1
Error
code 2
Data 1 Data 2
EXT Sum
check
Format
Number of Characters
1 2 3 4 5
D
NAK
Inverter
station
number
Error
code