Mitsubishi FX3U-232-BD User Manual page 381

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
2. Changing the speed using a sequence program
M8000
RUN
monitor
3. Controlling operations of an inverter
X000
Operation stop
command input
X001
Forward
rotation
command
input
X002
Reverse
rotation
command
input
M15
Operation
stop
M8000
RUN
monitor
M17
Command for
switching to
speed 1
M18
Command for
switching to
speed 2
FNC271
K0
IVDR
X000
Operation stop
command input
X001 X002
Forward Reverse
rotation rotation
command command
input input
X002 X001
Reverse Forward
rotation rotation
command command
input input
FNC271
K0
IVDR
10 Practical Program Examples (for FX3U and FX3UC PLCs)
FNC 12
K6000 D10
MOV P
Operation
speed
FNC 12
K4000 D10
MOV P
Operation
speed
FNC 12
K2000 D10
MOV
P
Operation
speed
H0ED D10 K1
Operation
speed
SET M15
Operation
stop
RST M15
Operation
stop
M21
Forward rotation
command
M22
Reverse rotation
command
H0FA K2M20 K1
10.1 Practical Example 1
"60 Hz" is written as
the initial value at
startup
The operation speed
"40 Hz" is written
The operation speed
"20 Hz" is written
The preset frequency is
written to the inverter
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
E-91
A
B
C
D
E
F
G
H
I
Apx.