Mitsubishi Electric FR-D720S SC EC Instruction Manual page 366

Communication operation and settings
Item
Set frequency (RAM)
Set frequency (E²PROM)
Set frequency (RAM)
Set frequency
(RAM, E²PROM)
Inverter reset
Alarm definition all clear
All parameter clear
Tab. 6-57: Setting of the instruction codes and data (2)
6 - 216
Read/
Instruction
Code
Write
H6D
Read
H6E
HED
Write
HEE
Write HFD
Write HF4
Write HFC
Data Description
Read set frequency/speed from RAM or
E²PROM.
H0000 to HFFFF: Set frequency in 0.01Hz
increments
Speed increments 1/0.001
(when Pr. 37 = 0.01 to 9998)
When "0.01 to 9998" is set in Pr. 37 and "01"
in instruction code HFF, the increments
change to 0.001 and the data format is E2.
Write set frequency/speed to RAM or
E²PROM.
H0000 to H9C40 (0 to 400.00Hz):
Frequency increments 0.01Hz
Speed increments 1/0.001
(when Pr. 37 = 0.01 to 9998)
When "0.01 to 9998" is set in Pr. 37 and "01"
in instruction code HFF, the increments
change to 0.001 and the data format is A2.
To change the set frequency consecutively,
write data to the inverter RAM. (instruction
code: HED)
H9696: Resets the inverter.
As the inverter is reset at start of communica-
tion by the computer, the inverter cannot
send reply data back to the computer.
H9966: Resets the inverter.
When data is sent normally, ACK is returned
to the computer and then the inverter is
reset.
H9696: Alarm history batch clear
All parameters return to the initial values.
Whether to clear communication parameters
or not can be selected according to data.
(✔: Clear, —: Not clear)
Communication
Clear Type Data
parameter
H9696
Parameter
clear
H5A5A
H9966
All parameter
clear
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 these
parameters again.
Executing clear will clear the instruction code
HEC, HF3, and HFF settings. During
password lock, only all parameter clear is
available with H9966 and H55AA.
Parameter
Number
of Data
Digits
(Format)
4
(B, E/D)
6
(B, E2/D)
4
(A, C/D)
6
(A2, C/D)
4
(A, C/D)
4
(A, D)
4
(A, C/D)
✔
—
✔
4
—
(A, C/D)