FAB
I
ntelligent
C
ontrollerr
Only when all the inputs of NOR function blocks are at a low potential (status
0), the output will be closed (status 1). If any input is at high potential (status 1),
the output will be open (status 0).
Logical frame of “NOR”:
3.1.6 XOR
When the statuses of inputs are not the same, the output status of XOR is 1.
When the statuses of inputs are the same, the output status of XOR is 0.
As shown in the line diagram, In
FAB, the two commutator contacts
for XOR are connected in serial as
follows:
In FAB, the symbol of XOR is shown
as follows:
20
11
12
13
Q
11 12 1 3
I1 I2 I3 Q
0 0 0 1
0 0 1 0
0 1 0 0
0 1 1 0
1 0 0 0
1 0 1 0
1 1 0 0
1 1 1 0
11 12
Q
I1
I2