When using
Image triggering
, the
Profiles per image
parameter specifies the number of
profiles the camera acquires after the image trigger signal goes high. After the specified
number of profiles, the camera will either idle or continue to acquire another series
of profiles, depending on the state of the image trigger signal and the settings of the
acquisition control parameters. See the table and the figure below.
Parameter setting
Description
RisingEdge
The acquisition of a new series of profiles starts on a rising edge
on the enable signal. Multiple enable trigs are ignored until all
profiles (
Profiles per image
parameter) have been acquired. When
all profiles have been acquired, the camera waits for a new rising
edge.
LevelHigh
The acquisition of a new series of profiles starts each time the
image trigger input has a high level as input. For the very first
profile, the camera requires not only a high level but also a rising
edge
The system adapts the buffer height for the image grabber and the camera to the
Profiles per image
parameter to keep the image synchronized and receive a full image
after the image capture is completed. To avoid unnecessary CPU load, set the
Profiles
per image
parameter to no less than 100 pixels.
0 V
24 V
Height
Height
Height
Image
trigger
signal
Profile acquisition
(level sensitive)
3
4
5
6
1
2
Figure 55: Timing diagram for Image trigger signal
1
Image trigger signal
2
Profile acquisition (level sensitive)
3
Image trigger signal RisingEdge and LevelHigh. Acquisition of profiles starts.
4
Image trigger signal. RisingEdge ignores, LevelHigh acquires.
5
Acquisition complete. Interpretation of image trigger signal.
6
Image trigger signal. Both RisingEdge and LevelHigh acquires.
8.7.3.1
Setting image triggering
Tabs:
2D Image
,
3D Image
Open the
Image triggering
category in the parameter settings section. For information
about the triggering concepts,
see "3D triggering concepts", page 55
Enabling image triggering:
1.
Select the
Image trigger
checkbox.
2.
Set the triggering option to
RisingEdge
or
LevelHigh
.
3.
Follow the steps in the Encoder section (
see "Setting encoder triggering", page 59
to acquire profiles based on encoder input or profile trigger signal input, or in
the Free-running (
see "Setting free-running triggering", page 57
) section to acquire
profiles with a regular time interval.
8
CONFIGURATION
60
O P E R A T I N G I N S T R U C T I O N S | Ruler3000
8026049//2021-04 | SICK
Subject to change without notice
