Mitsubishi Electric 800 Series Function Manual page 42

(N) Operation via communication and its settings
 Programming example for setting the running frequency
• The following program example changes the running frequency of 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. (RWr0: Refer to
SB49 SW0B0.0
0
M0 X20
3
M300
7
M301 X1021
9
M302 X1021
16
22
• To continuously change the running frequency from the programmable controller
After the frequency setting complete (for example, X1021) turns ON, check that the reply code from the remote register
is H0000, then change the setting data (for example, W100) continuously.
• Program example for writing data to EEPROM
Modify the following commands of the programming example on
Frequency setting command Y1021  Y1022
Frequency setting completion X1021  X1022
<Timing chart when writing to RAM>
Y1021
W100
Inverter
running
frequency

For EEPROM, write is made only once when Y1022 is switched on.

If the set data is changed with Y1022 on, it is not reflected on the inverter.
42
PARAMETER
M0
PLS M300
SET M301
MOV K5000 W100
SET Y1021
RST M301
SET M302
MOV W0 D2
RST Y1021
RST M302
END
page
<Timing chart when writing to EEPROM>
Y1022
(∗2)
W100
Inverter
running
frequency
Reflect to the inverter when Y1022 turns on
page 33)
Check the data link status of the station 1
Write set frequency to RWw0.
Turn off the frequency setting
command RAM (RY21)
Read reply code (RWr0) to D2 when the
frequency setting completion (RX21) turns on.
Turn off the frequency setting command RAM
(RY21)
42.
(∗1)