Simplex 4010 Installing And Operating Insructions page 116

Custom Control Programming,
Field 1 (continued)
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OR
The OR Link operator links the current statement in Parallel with all previous
statements in an equation (see Figure 8-8).
Field 1
FIRST
STATEMENT [ ]
SECOND
[OR]
STATEMENT
In Figure 8-8, IF the condition of 3-01 is Fire OR the condition of 3-02 is Fire,
then the INPUT SIDE is true. Another way to look at this equation is shown in
Figure 8-9. In order to cross from the INPUT SIDE of the equation to the
OUTPUT SIDE, one of the statements (3-01 or 3-02) must be true.
INPUT SIDE
(Statements 1 & 2)
Continued
Field 2
[ ] [FIRE]
[ ] [FIRE]
Figure 8-8
3-01
03-01
3-02
03-02
Figure 8-9
8-12
Field 3 Field 4
[3-01]
[3-02]
OUTPUT SIDE
Points 3-01 and 3-02
in Parallel.
One statement or the
other must be true in
order for the output
to have the chance to
turn on.
Continued on next page