Mitsubishi Electric FR-A720-0.4K Instruction Manual page 353

Communication operation and setting
(9) Setting items and set data
After completion of parameter setting, set the instruction codes and data then start communication from the computer
to allow various types of operation control and monitoring.
Read/
Item
Write
Read
Operation mode
Write
Output
frequency/ Read
speed
Output
Read
current
Output
Read
voltage
Special
Read
monitor
Read
Special
monitor
selection No.
Write
Fault record Read
Run command
Write
(extended)
Run command Write
Inverter status
monitor Read
(extended)
Inverter status
Read
monitor
Set frequency
(RAM)
Read
Set frequency
(EEPROM)
Set frequency
(RAM)
Write
Set frequency
(RAM, EEPROM)
Inverter reset Write
Faults history
Write
batch clear
Refer to page 336 for data formats (A, A', B, B', C, D)
342
Instruction
Code
H0000: Network operation
H7B
H0001: External operation
H0002: PU operation
HFB
(RS-485 communication operation via PU connector)
H0000 to HFFFF: Output frequency in 0.01Hz increments
H6F Speed in 1r/min increments (when Pr. 37 = 1 to 9998 or Pr. 144 = 2 to 10,
102 to 110)
H0000 to HFFFF: Output current (hexadecimal) in 0.01A increments (55K
H70
H71 H0000 to HFFFF: Output voltage (hexadecimal) in 0.1V increments
H72 H0000 to HFFFF: Monitor data selected in instruction code HF3
H73
H01 to H3C: Monitor selection data
Refer to the special monitor No. table (page 344)
HF3
H0000 to HFFFF: Two most recent fault records
H74 to
H77
Refer to the fault data table (page 345)
HF9
You can set the control input commands such as the forward rotation
signal (STF) and reverse rotation signal (STR). (Refer to page 345 for
details)
HFA
H79
You can monitor the status of the output signals such as forward rotation,
reverse rotation and inverter running (RUN). (Refer to page 346 for details)
H7A
Read the set frequency/speed from the RAM or EEPROM.
H6D
H0000 to HFFFF: Set frequency in 0.01Hz increments
Speed in 1r/min increments (When Pr. 37 = 1 to 9998 or Pr. 144 = 2 to 10,
H6E
102 to 110)
Write the set frequency/speed into the RAM or EEPROM.
HED
H0000 to H9C40 (0 to 400.00Hz) : frequency in 0.01Hz increments
H0000 to H270E (0 to 9998) : speed in r/min increments (when Pr. 37 = 1
to 9998 or Pr. 144 = 2 to 10, 102 to 110)
HEE
⋅ To change the running frequency consecutively, write data to the
inverter RAM. (Instruction code: HED)
H9696: Resets the inverter.
⋅ As the inverter is reset at start of communication by the computer, the
inverter cannot send reply data back to the computer.
HFD
H9966: Resets the inverter.
⋅ When data is sent normally, ACK is returned to the computer and then
the inverter is reset.
HF4 H9696: Clears the faults history as a batch.
Data Description
or lower) / 0.1A increments (75K or higher)
b15 b8 b7
H74
Second fault in past Latest fault
H75
Fourth fault in past Third fault in past
H76
Sixth fault in past Fifth fault in past
H77
Eighth fault in past Seventh fault in past
Number of
Data Digits
(format)
4 digits
(B.E/D)
4 digits
(A,C/D)
4 digits
(B.E/D)
4 digits
(B.E/D)
4 digits
(B.E/D)
4 digits
(B.E/D)
2digits
(B.E'/D)
2digits
(A',C/D)
b0
4 digits
(B.E/D)
4 digits
(A,C/D)
2digits
(A',C/D)
4 digits
(B.E/D)
2digits
(B.E'/D)
4 digits
(B.E/D)
4 digits
(A,C/D)
4 digits
(A,C/D)
4 digits
(A,D)
4 digits
(A,C/D)