Panasonic Electric Works Nordic AB
MEW01351
Rev: -
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
82
13.5.3.3
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:
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
13.5.3.4
Parentheses
Changes priority order.
a
OR
NOT
(
b
AND
c
)
= y
(This is same as the previous but
completed with parentheses.)
This is shown in the following table:
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
13.5.3.5
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).
