SVS-Vistek HR Series, Manual

Page: 66 / 102

SVS-VISTEK
Feature description 66
6.3.8 PLC/Logical Operation on Inputs
The logic input combines trigger signals with Boolean algorithms. The
camera provides AND, NAND, OR, NOR as below. You might combine
combine true/false states of the inputs to determine camera actions. The
result can be connected to a camera trigger signal or it may be source for
the next logical operation with another input. It is possible to connect it to
an OUT line as well.
AND
Both trigger inputs have to be true.
A B Y = A
∧
B
0 0 0
0 1 0
1 0 0
1 1 1
NAND
The
N E G A T I V E
-A ND is true only if its inputs are false.
Invert the output of the AND module.
A B Y = A NAND B
0 0 1
0 1 1
1 0 1
1 1 0
OR
If neither input is high, a low pulse_out (0) results.
Combine trigger input one and two.
A B Y = A v B
0 0 0
0 1 1
1 0 1
1 1 1
NOR
No trigger input – one nor two – results in a high or a low level
pulse_out.
Invert both trigger inputs. By inverting the resulting pulse_out you will get
the NOR I pulse
A B Y = A
⊽
B NOR Y = A
∨
B NOR i
0 0 1 0
0 1 0 1
1 0 0 1
1 1 0 1