Mitsubishi Electric FR-A720-0.4K Instruction Manual page 336

Communication operation and setting
No. Item
All parameter
8
clear
9
Parameters
10
Link parameter
11
extended setting
Second
parameter
12 changing
(instruction code
HFF=1, 9)
Refer to page 320 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.
326
Read/ Instruction
Write Code
All parameters return to the initial values.
Any of four different all clear operations are performed according to
the data.
Data
H9696
H9966
Write HFC
H5A5A
H55AA
When all parameter clear is executed for H9696 or H9966,
communication-related parameter settings also return to the initial
values. When resuming operation, set the parameters again.
*1 Refer to page 317, 318.
*2 Refer to the list of calibration parameters on the next page for calibration
parameters.
*3 Pr. 75 is not cleared
H00 to
Refer to the instruction code (page 444) and write and/or read the
Read
H63
values as required.
When setting Pr. 100 and later, link parameter extended setting must
H80 to
Write
be set.
HE3
Read H7F
Parameter description is changed according to the H00 to H09
setting.
For details of the setting, refer to the instruction code (page 444).
Write HFF
When setting the calibration parameters
H00:Frequency
Read 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.
Write 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
ACK 00
STX 00 0000 ETX 25
STX 00 0000 ETX 25
Data Description
Pr.
Communi-
Calibration
cation Pr.
Pr.
*2
*1
×
× ×
×
*2
Description
Set "H01" in the extended link parameter.
Set "H01" in second parameter changing.
C3 (Pr. 902) is read. 0% is read.
C6 (Pr. 904) is read. 0% is read.
HEC
Other Pr.
HF3
*3
HFF
*1
Number of
Data Digits
(format)
4 digits
(A,C/D)
4 digits
(B.E/D)
4 digits
(A,C/D)
2digits
(B.E'/D)
2digits
(A',C/D)
2digits
(B.E'/D)
2digits
(A',C/D)