3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.1 Sequence Program
3.1.3 Interrupt programs
3
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1
O
verv
iew
2
Per
fo
rma
nce
S
p
ecifica
tio
n
3
S
equ
en
ce P
ro
g
ra
m
Co
nfig
ura
tio
n a
nd
E
xecut
io
n Co
nd
iti
o
ns
4
I/O N
unb
er
Assig
n
m
e
nt
5
Me
mor
ie
s a
nd
File
s
Ha
nd
led
by CP
U Mo
du
le
6
Func
tions
7
Co
mmu
nic
a
tion
us
in
g
bu
ilt
-i
n E
th
e
rne
t po
rt
s o
f
CP
U mod
u
le
8
Co
mm
un
icatio
n
w
ith
Int
e
lli
ge
nt
Fun
ction
Mo
du
le
Remark
Refer to the following manual for the block guarantee of cyclic data per station.
CC-Link IE Controller Network Reference Manual
Q Corresponding MELSECNET/H Network System Reference Manual
(PLC to PLC network)
Q Corresponding MELSECNET/H Network System Reference Manual
(Remote I/O network)
(g) Interrupt during END processing
When the constant scan is set and an interrupt factor occurs during the wait time
in the END processing, an interrupt program corresponding to the interrupt factor
is executed.
(5) Save and restoration of index register data and file register No.
When an interrupt program is executed by default of the CPU module, the index
register data and file register block No. are saved and restored at the time of switching
between the scan execution type program/low speed execution type program
and the interrupt program.(
Note12
(6) High speed execution setting and overhead time of interrupt program
When the "High speed execution" item for interrupt programs is checked on the PLC
system tab of PLC parameter in GX Developer, the index registers are neither saved
nor restored at the time of switching from the main routine program to the interrupt
program.
This reduces the overhead time of the interrupt program.(
Note12
Basic
Universal
UD
Note3.12
Redundant
The Basic model QCPU, Redundant CPU and Universal model QCPU cannot be use low speed
execution type program.
Basic
Universal
UD
Redundant