Mitsubishi Electric FR-A740-00023 Instruction Manual page 338

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.
No. Item
1 Operation mode
Output
frequency/
speed
Output
current
Output
voltage
Special
monitor
Special
monitor
2
selection No.
Alarm
definition
Run command
(extended)
3
Run command
Inverter status
monitor
(extended)
4
Inverter status
monitor
Set frequency
(RAM)
Set frequency
(EEPROM)
Set frequency
5
(RAM)
Set frequency
(RAM, EEPROM)
6 Inverter reset
Alarm definition
7
all clear
Refer to page 323 for data formats (A, A', B, B', C, D)
328
Read/ Instruction
Write Code
H0000: Network operation
Read H7B
H0001: External operation
H0002: PU operation
Write HFB
H0000 to HFFFF: Output frequency in 0.01Hz increments
Read 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
Read H70
Read H71 H0000 to HFFFF: Output voltage (hexadecimal) in 0.1V increments
Read H72 H0000 to HFFFF: Monitor data selected in instruction code HF3
Read H73
H01 to H3C: Monitor selection data
Refer to the special monitor No. table (page 330)
Write HF3
H0000 to HFFFF: Two most recent alarm definitions
H74 to
Read
H77
Refer to the alarm data table (page 331)
Write HF9
You can set the control input commands such as the forward
rotation signal (STF) and reverse rotation signal (STR). (Refer to
page 331 for details)
Write HFA
Read H79
You can monitor the status of the output signals such as forward
rotation, reverse rotation and inverter running (RUN). (Refer to page
332 for details)
Read H7A
Read the set frequency/speed from the RAM or EEPROM.
H6D
H0000 to HFFFF: Set frequency in 0.01Hz increments
Read
Speed in 1r/min increments (When Pr. 37 = 1 to 9998 or Pr. 144 = 2
H6E
to 10, 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.
Write
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.
Write HFD
H9966: Resets the inverter.
⋅ When data is sent normally, ACK is returned to the computer and
then the inverter is reset.
Write HF4 H9696: Alarm history batch clear
Data Description
(RS-485 communication operation via PU connector)
(01800 or less) / 0.1A increments (02160 or
more)
b15 b8 b7
H74
Second alarm in past
H75
Fourth alarm in past
H76
Sixth alarm in past
H77
Eighth alarm in past
b0
Latest alarm
Third alarm in past
Fifth alarm in past
Seventh alarm 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)
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)