3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.8 I/O Processing and Response Lag
3.8.1 Refresh mode
3
- 75
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
(4) Response lag
An output change lags a maximum of two scans behind an input module change
depending on the ON timing of an external contact.
Ladder examples
Figure 3.60 When Y5E turns ON fastest
Figure 3.61 When Y5E turns ON slowest
55
X5
Y5E
Ladder that turns the Y5E output
ON when an X5 input turns ON.
Delay time
(Minimum 1 scan)
OFF
ON
0
END
END
0
0
: Input refresh
56
External contact
OFF
ON
X5
OFF
ON
Y5E
OFF
ON
External load
CPU module
devices
: Output refresh
Delay time
(Maximum 2 scan)
OFF
ON
0
END
END
0
0
: Input refresh
56
External contact
OFF
ON
X5
OFF
ON
Y5E
OFF
ON
External load
CPU module
devices
: Output refresh