Panasonic MEW01 351 Planning Manual page 84

Panasonic Electric Works Nordic AB
MEW01351 Rev: -
13.5.3.3
13.5.3.4
13.5.3.5
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
NOT
Inverts a condition, e.g. NOT b = NOT 0=1.
a OR NOT b AND c = y
This is shown in the following table:
Parentheses
Changes priority order.
a OR NOT( b AND c ) = y
completed with parentheses.)
This is shown in the following table:
Control expressions
The AND operator has priority, i.e. a AND b OR c = (a AND b) OR c.
This is perhaps more obvious if you write it: a • b + c.
This means that: a AND b OR c ≠ a AND (b OR c).
a b c y
0 0 0 0
0 0 1 1
0 1 0 0
0 1 1 0
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
(This is same as the previous but
a b c y
0 0 0 1
0 0 1 1
0 1 0 1
0 1 1 0
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
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