Mitsubishi Electric FR-A720-0.4K Instruction Manual page 354

Read/
Item
Write
Parameter clear
Write
All clear
Read
Parameters
Write
Read
Link parameter
extended setting
Write
Second Read
parameter
changing
(instruction code
HFF=1, 9) Write
Refer to page 336 for data formats (A, A', B, B', C, D)
REMARKS
⋅ Set 65520 (HFFF0) as a parameter value "8888" and 65535 (HFFFF) as "9999".
⋅ For the instruction codes HFF, HEC and HF3, their values are held once written but cleared to zero when an inverter reset or all
clear is performed.
Example) When reading the C3 (Pr. 902) and C6 (Pr. 904) settings from the inverter of station 0
Computer Send Data
1) ENQ 00 FF 0 01 82
2) ENQ 00 EC 0 01 7E
3) ENQ 00 5E 0 0F
4)
ENQ 00 60 0 FB
To read/write C3 (Pr. 902) and C6 (Pr. 904) after inverter reset or parameter clear, execute from 1) again.
Instruction
Code
All parameters return to the initial values.
Whether to clear communication parameters or not can be
selected according to data. (
Refer to page 466 for parameter clear, all clear, and communication
parameters.
Clear Type
Parameter clear
All parameter clear
HFC
When clear is executed for H9696 or H9966, communication-related
parameter settings also return to the initial values. When resuming
operation, set the parameters again.
Executing clear will clear the instruction code HEC, HF3, and HFF
settings.
In the password locked status (refer to page 310), only H9966 and H55AA
(all parameter clear) are valid.
*1 Turning OFF the power supply while clearing parameters with H5A5A or
H55AA also clears the communication parameter settings back to the initial
values.
H00 to
Refer to the instruction code (Refer to page 466) and write and/or read the
H63
values as required.
When setting Pr. 100 and later, link parameter extended setting must be
H80 to
set.
HE3
H7F
Parameter description is changed according to the H00 to H09 setting.
For details of the setting, refer to the instruction code (Refer to page 466).
HFF
When setting the calibration parameters
H00:Frequency
*2
H6C
H01: Parameter-set analog value
H02: Analog value input from terminal
1 Refer to the list of calibration parameters on the next page for calibration
*
parameters.
HEC
2 The gain frequency can also be written using Pr. 125 (instruction code H99) or
*
Pr. 126 (instruction code H9A).
Inverter Send Data
ACK 00 Set "H01" in the extended link parameter.
ACK 00 Set "H01" in second parameter changing.
STX 00 0000 ETX 25 C3 (Pr. 902) is read. 0% is read.
STX 00 0000 ETX 25 C6 (Pr. 904) is read. 0% is read.
Communication operation and setting
Data Description
: Clear, ×: Not clear)
Data Communication Pr.
H9696
×
H5A5A
*1
H9966
×
H55AA
*1
*1
Description
Number of
Data Digits
(format)
4 digits
(A,C/D)
4 digits
(B.E/D)
4 digits
(A,C/D)
2 digits
(B.E'/D)
2 digits
(A',C/D)
2 digits
(B.E'/D)
2 digits
(A',C/D)
4
343