Mitsubishi FX3U-422-BD - Page 418

E-104
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
10 Practical Program Examples (for FX3G/FX3U/FX3UC PLCs)
10.1 Practical Example 1
2. Changing the speed using a sequence program
3. Controlling operations of an inverter
M8000
FNC271
IVDR
K0 H0ED D10 K1
RUN
monitor
FNC 12
MOV
K4000 D10
P
Operation
speed
The operation speed
"40 Hz" is written
The preset frequency is
written to the inverter
FNC 12
MOV
K6000 D10
P
FNC 12
MOV
K2000 D10
P
Operation
speed
Operation
speed
Operation
speed
"60 Hz" is written as
the initial value at
startup
The operation speed
"20 Hz" is written
M17
M18
Command for
switching to
speed 1
Command for
switching to
speed 2
X000
FNC271
IVDR
K0 H0FA K2M20 K1
Operation stop
command input
SET M15
RST M15
X000X001
X002
M15 X001 X002
M21
X002 X001
M22
M8000
RUN
monitor
Forward
rotation
command
input
Operation stop
command input
Reverse
rotation
command
input
Operation
stop
Operation
stop
Forward
rotation
command
input
Forward
rotation
command
input
Reverse
rotation
command
input
Reverse
rotation
command
input
Operation
stop
Forward rotation
command
Reverse rotation
command
H0FA is set to "00H"
Operation stop is reset
by input X001 or X002
b1 of H0FA is set to ON
b2 of H0FA is set to ON
Operation command is
written
M27 to M20
→ H0FA