Examples For Corrections In Lad - Siemens Simatic S5 Operating Instructions Manual

Examples for corrections in LAD
Basic r u l e s f o r t h e c o r r e c t i o n of
p a r a l l e l branches
1.
TO
an e x i s t i n g
,
only p a r a l l e l
branches a l s o with may be
\
added. I f a s e r i e s c o n t a c t i s t o be
added t o an e x i s t i n g p a r a l l e l branch,
then t h e statement must
f i r s t be converted i n t o
( s e e example 4 , page 2 5 ) .
This sequence of statements i s only
p o s s i b l e with
PC 55-130 A/K.
2.
I f a c o n t a c t i s t o be added t o a
p a r a l l e l branch whlch was
programmed without and
,
t h e n b e f o r e doing s o , t h e beginning
\
@
and termination
\
j
of t h e p a r a l l e l branch must be
i n s e r t e d . (see example 3, page 2 4 ) .