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5, Programming
Please read this chapter together with the instruction manual for the programming unit (PU).
r
- - - - - - - -
t t
I
A
I
Y 5
a = A * X 4 g
r - - - - - - - -
-
i
M5
5
B
I
'
L,,,--,-,
. - J
y9
8
l
-
1
Jf
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5 1 . Programming principles
The program is drawn up by programming on the basis of the circuit diagrams, but the following
principles exist.
Some
of
these principles have already been explained, but they will be listed again in this chapter.
A N D
X49
1 1
Serial connection is executed bet-
ween the operation result A at this
time and the contact a of X49.
''
O R I
Y98
Parallel connection is executed bet-
ween the operation result B at this
5-1-1. Instrluctions
(1) Operation instructions like AND, OR, LD, ANB, etc. are connection instructions specifying
the connection of contacts or contact combinations (operation results up to that time).
(2) Even when the output instructions OUT, SET, and RST are executed, the operation results
up to that time will not be changed.
(3) The END instruction must be given at the program end.
A
'\
Fig.
5-1.
Operation parties
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