8-11
AND
The AND Link operator links the current statement in Series with all previous
statements in an equation (see Figure 8-6).
[ ] [ ] [FIRE] [3-01]
[AND] [ ] [FIRE] [3-02]
Figure 8-6
In Figure 8-6, IF the condition of 3-01 is Fire AND the condition of 3-02 is Fire,
then the INPUT SIDE is true. Another way to look at this equation is shown in
Figure 8-7. In order to cross from the INPUT SIDE of the equation to the
OUTPUT SIDE, both of the statements must be true.
18-01 18-02
Figure 8-7
Continued on next page
Custom Control Programming, Continued
Field 1 (continued)
INPUT SIDE
(Statements 1 & 2)
Points 3-01 and 3-
02 in Series.
Both statements
must be true in
order to go from
the INPUT to the
OUTPUT.
OUTPUT SIDE
3-01
Field 1
3-02
Field 2 Field 3
Field 4
FIRST
STATEMENT
SECOND
STATEMENT
Pro
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