Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 1031 / 1218

Parameters Ethernet communication (FR-A800-E)
FR-A800 5 - 829
Programming example for setting the running frequency
The following program changes the running frequency of the station 1 inverter to 50.00 Hz.
●
Set frequency: K5000 (decimal)
●
The reply code at the time of instruction code execution is set to D2. (Refer to page 5-821.).
I003136E
Fig. 5-399: Programming example 6
NOTES To change the running frequency continuously using a programmable controller, check that the
frequency (speed) setting completion (for example, X100D) turns ON, and the reply code from the
remote register is H0000. Then change the setting data (for example, W101) continuously.
To write the running frequency to the EEPROM, change the following points in the program
shown in fig. 5-399:
●
Frequency setting command: Y100D Y100E
●
Frequency setting completion: X100D X100E
(0)
SM1536 SD1536.0 SD1540.0 M0
(4)
M0 X20
PLS
M300
(8)
M300
SET
M301
(10)
M301 X100D
MOV
K5000 W101
SET
Y100D
RST M301
SET
M302
(17)
M302 X100D
MOV W2 D2
RST
Y100D
RST
M302
(23)
END
Check the data link status of the station 1.
Read the reply code (RWr2) to output to D2 when
the frequency setting completion (RX0D) turns ON.
Write the set frequency to RWw1.
Turn OFF the frequency setting command RAM
(RY0D).
Turn OFF the frequency setting command RAM
(RY0D).
Timing chart for writing to the RAM Timing chart for writing to the EEPROM
Y100D
W101
Inverter running
frequency
Y100E
W101
Inverter running
frequency
Apply to the inverter when the
command Y100E turns ON.
To the EEPROM, a writing is performed only once after the command Y100E turns ON.
If the set data is changed at the command Y100E ON, the change is not applied to the inverter.