Mode 2 Lo
g
ic Flow Chart
Appendix A-7
The control’
s
re
s
pon
s
e to
a
ny
s
et of condition
s
c
a
n
b
e
determined
b
y
s
tepping thro
u
gh the flow ch
a
rt
b
lock
s
us
ing
tho
s
e condition
s
when deci
s
ion
b
lock
s
a
re enco
u
ntered.
The flow ch
a
rt determine
s
when the o
u
tp
u
t
s
a
re en
ab
led
a
nd di
sab
led
b
y Mode 2 logic. Note: Motion ANDing (FCN
7) c
a
n
a
l
s
o di
sab
le o
u
tp
u
t
s
.
How to U
s
e the Flow Chart
To
us
e the
b
lock di
a
gr
a
m
assu
me th
a
t the control i
s
contin
u
o
us
ly proce
ss
ing the
b
lock
s
a
t
a
very f
as
t r
a
te
a
nd
i
s
never
s
topped on
a
ny one
b
lock. The control will get
s
t
u
ck proce
ss
ing the
sa
me p
a
th of
b
lock
s
repe
a
tedly (loop)
u
ntil
a
condition ch
a
nge
s
within one of the deci
s
ion
b
lock
s
in th
a
t loop which
a
lter
s
the p
a
th. Re
s
pon
s
e to
a
condition
ch
a
nge i
s
a
lmo
s
t in
s
t
a
nt
a
neo
us
s
o the new condition
s
e
s
t
ab
li
s
hed in the next loop t
a
ke
a
ffect
qu
ickly. Note th
a
t
the logic p
a
th c
a
n only flow in the direction of the
a
rrow
s
,
never
a
g
a
in
s
t them.
Rect
a
ngle Block
O
u
tp
u
t en
ab
le/di
sab
le
s
t
a
t
us
or
a
logic memory fl
a
g i
s
a
ltered.
Di
a
mond Block
A ye
s
/no deci
s
ion i
s
m
a
de
bas
ed on
the condition
s
t
a
ted within the
b
lock.
Mode 2 Flow Chart Block
s
1. Control power
s
u
p
a
nd
assu
me
s
po
s
ition determined
b
y l
as
t progr
a
mmed off
s
et.
2. O
u
tp
u
t
s
a
re di
sab
led. Gro
u
p en
ab
le inp
u
t i
s
a
rmed.
3
. Check for le
a
ding edge of gro
u
p en
ab
le inp
u
t
s
ign
a
l. If it
occ
u
rred go to
s
tep 4, if not loop
ba
ck to
s
tep 2.
4. Re
s
et gro
u
p po
s
ition to zero. Di
sa
rm gro
u
p en
ab
le inp
u
t.
5. En
ab
le the o
u
tp
u
t
s
to cycle
a
t their progr
a
mmed on/off
s
etpoint
s
. Go to
s
tep 6.
6. Check if gro
u
p po
s
ition h
as
re
a
ched next inp
u
t window
(CHN 9X). If ye
s
go to
s
tep 2, if no loop
ba
ck to
s
tep 5.
Note:
Po
s
ition c
a
n re
a
ch inp
u
t window from forw
a
rd or
rever
s
e direction.
Power Up
O
u
tp
u
t
s
Di
sab
led
Inp
u
t Armed
Inp
u
t
S
ign
a
l
Le
a
ding Edge
Occ
u
rred?
no
Po
s
ition Re
s
et
s
to zero
Inp
u
t Di
sa
rmed
ye
s
O
u
tp
u
t
s
En
ab
led
no
ye
s
Next Inp
u
t
Window Re
a
ched?
1
2
4
5
3
6
Mode 2 Lo
g
ic Flow Chart
TA
S
K
DECI
S
ION
