Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル
147
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.12 Pointer [P and I]
1
In
trodu
ct
ct
ion
2
O
ver
vi
ew
3
In
st
ru
ct
ion
Li
st
4
D
evices
in D
etail
etail
5
Specifi
ed t
he
he
D
evice &
C
onst
ant
ant
6
Bef
ore
ore
Pr
ogr
am
am
m
ing
7
B
asic
In
st
ru
ct
ion
8
FNC0
0-F
0-F
NC0
9
Pr
ogr
am
Flow
am
Flow
9
FN
C
C
10-FN
C
19
Mo
ve
ve
&
Co
mp
are
are
10
FNC2
0-F
0-F
NC2
9
Ar
ith.
&
&
Logic
O
per
ati
ati
on
Operations
3. Pointers for counter interrupt: 6 points
*1
→ For details on counter interrupt function, refer to Section 36.6.
The PLC executes an interrupt routine based on the comparison result obtained by the comparison set instruction for
high speed counter (DHSCS instruction).
Use these pointers for control requiring an interrupt routine based on the counting result from high speed counters.
high speed counter (DHSCS instruction).
Use these pointers for control requiring an interrupt routine based on the counting result from high speed counters.
*1.
This function is supported only in FX
3U
/FX
3UC
PLCs.
*2.
Cleared when the PLC mode switches from RUN to STOP.
Pointer No.
Interrupt disabling flag
Pointer No.
Interrupt disabling flag
I010
M8059
*2
I040
M8059
*2
I020
I050
I030
I060
Step
0
I620
Pointer for
interrupt
Interrupt
routine
Interrupt is
enabled
Main program
is finished
Main
program
Interrupt at every 20 ms
Interrupt return
FNC 04
EI
FNC 06
FEND
FNC 03
IRET
END
"FEND" indicates the end of the main
program.
Make sure to describe an interrupt routine
after "FEND".
•
The PLC executes an interrupt routine at every
20 ms.
The PLC returns to main program by IRET
instruction.
•
Timer interrupt is enabled after EI instruction.
It is not necessary to program DI (disable
interrupt) instruction when no zone to disable
timer interrupt is needed.
•