Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 201

Communication operation and setting
(7) Setting items and set data
After completion of parameter settings, 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
Rotation
speed
Read
/output
frequency
Output
Read
current
Output
Read
voltage
Special
Read
monitor
Special
Read
monitor
Write
Selection No.
Fault records Read
Run command
Write
(extended)
Run command Write
Drive unit status
Read
monitor (extended)
Drive unit status
Read
monitor
Set speed (RAM)
Set speed
Read
(EEPROM)
Set speed (RAM)
Write
Set speed
(RAM, EEPROM)

Refer to page 192 for data format (A, A1, A2, A3, B, C, C1, D, E, E1, E2, E3.)

The increment is 0.001 and the data format is E2 or A2 when the following conditions are met: Pr. 37 = "0.01 to 9998," Pr. 144 = "2 to 10," and the
instruction code HFF = "01."
198
Instruction
Code
H0000: Network operation mode
H0001: External operation mode, External JOG operation mode
H7B
H0002: PU operation mode, External/PU combined operation mode 1 and
2, PUJOG operation mode
H0000: Network operation mode
HFB H0001: External operation mode
H0002: PU operation mode (Pr. 79 = "6")
H0000 to HFFFF: Rotation speed in 1r/min increments
Output frequency increments 0.01Hz (when Pr. 144 = 4, 6 (2, 8, 10))
Machine speed increments 0.001 (when Pr. 37 = 0.01 to 9998) 
H6F
When "100" is set in Pr. 52, the monitor value is different depending on
whether the drive unit is at a stop or running. (Refer to page 134.)
H70 H0000 to HFFFF: Output current (hexadecimal) in 0.01A increments
H71 H0000 to HFFFF: Output voltage (hexadecimal) in 0.1V increments
H0000 to HFFFF: Monitor data selected in instruction code HF3 
H72
H73
H01 to H50: Monitor selection data
Refer to the special monitor No. table on page 200.
HF3
H0000 to HFFFF: Two latest fault records
H74 to H77
Refer to the alarm data table on page 201.
HF9
Control input commands such as forward rotation (STF) signal and reverse
rotation (STR) signal. (For details, refer to page 201.)
HFA
H79
Monitor the states of the output signals such as forward rotation, reverse
rotation and Drive unit running (RUN). (For details, refer to page 202.)
H7A
H6D
Read the set speed/frequency from the RAM or EEPROM.
H0000 to HFFFF: speed setting increments 1r/min.
H6E Setting frequency increments 0.01Hz (when Pr. 144 = 4, 6 (2, 8, 10))
Machine speed increments 0.001 (when Pr. 37 = 0.01 to 9998) 
Write the set speed/frequency into the RAM or EEPROM.
HED
H0000 to HFFFF: speed setting increments 1r/min.
Setting frequency increments 0.01Hz (when Pr. 144 = 4, 6 (2, 8, 10))
Machine speed increments 0.001 (when Pr. 37 = 0.01 to 9998) 
 To change the set speed/frequency consecutively, write data to the drive
HEE
unit RAM. (Instruction code: HED)
Data Definition
b15 b8b7
First fault in past Latest fault
H74
Third fault in past
H75 Second fault in past
Fifth fault in past Fourth fault in past
H76
H77 Seventh fault in past Sixth fault in past
Number of
Data Digits
(Format)
4 digits
(B, E/D)
4 digits
(A, C/D)
4 digits
(B, E/D),
6 digits
(B, E2/D)
4 digits
(B, E/D)
4 digits
(B, E/D)
4 digits
(B, E/D),
6 digits
(B, E2/D)
2 digits
(B, E1/D)
2 digits
(A1, C/D)
b0
4 digits
(B, E/D)
4 digits
(A, C/D)
2 digits
(A1, C/D)
4 digits
(B, E/D)
2 digits
(B, E1/D)
4 digits
(B, E/D),
6 digits
(B, E2/D)
4 digits
(A, C/D),
6 digits
(A2, C/D)