105
7.10 Category: DigitalIOControl
The Digital I/O chapter covers the features required to control the general Input and Out-
put signals of the device.
Trigger
(
Line Selector
→
Line 0 / Line 1)
(General Information)
Trigger signals are used to synchronize the camera exposure and a machine cycle or, in
case of a software
trigger, to take images at predefined time intervals.
Trigger (valid)
Exposure
Readout
Time
A
B
C
Different trigger sources can be used here.
Trigger Source (Examples of possible trigger sources)
ph
oto
electric sens
or
trigge
r signal
pr
og
ra
mm
able logic co
ntr
olle
r
others
so
ftwa
re trigge
r
Hard
ware trig
ger
Each trigger source must be activated separately. When the trigger mode is activated, the
hardware trigger is activated by default.
high
low
U
t
0
4.5V
11V
30V
t
delay trigger
start active
trigger
A - Trigger delay
B - Exposure time
C - Readout time
Trigger Delay:
The trigger delay is a
flexible user-defined delay
between the given trigger
impulse and the image
capture. The delay time
can be set between 0.0
μs and 2.0 s in increments
of 1 μs. Where there are
multiple triggers during the
delay, the triggers will also
be stored and delayed. The
buffer is able to store up to
512 trigger
signals during the delay.
Your benefits:
▪
No need for an external
trigger sensor to be perfect-
ly aligned
▪
Different objects can be
captured without hardware
changes
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