Baumer VisiLine, Руководство пользователя

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9.6.3 Trigger
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.
9.6.4 Trigger Source
ph
oto
electric sens
or
trigge
r signal
pr
og
ra
mm
able logic co
ntr
ol
er
others
so
ftwa
re trigge
r
Har
dware
trigger
broadcast
Each trigger source has to be activated separately. When the trigger mode is activated,
the hardware trigger is activated by default.
▲ Figure 33
Trigger signal, valid for
Baumer cameras.
high
low
U
t 0
4.5V
11V
30V
Figure 34 ►
Camera in trigger
mode:
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 cap
-
ture. The delay time can
be set between 0.0 μsec
and 2.0 sec with a stepsize
of 1 μsec. In the case of
multiple triggers during the
delay the triggers will be
stored and delayed, too.
The buffer is able to store
up to 512 trigger
signals during the delay.
Your benefits:
No need for a perfect ▪
alignment of an external
trigger sensor
Different objects can be ▪
captured without hardware
changes
Figure 35 ►
Examples of possible
trigger sources.