Continuous flow
of discrete
objects
No photoelectric switch is used.
Profiles are sent continuously to the PC, typically
arranged in images of at least a few hundred lines.
The resulting image buffers in the PC can be ana‐
lyzed in a rolling buffer fashion, ensuring that all
objects are analyzed completely.
Example: Cookies.
Shorter objects
of equal length
A photoelectric switch is used.
One image per object.
Examples: Bottles, automotive parts, mobile
phones.
Longer objects of
variable size
A photoelectric switch is used.
Acquire profiles as long as the object remains in
front of the camera.
Several sub-images can be stitched together in the
PC.
Examples: Logs, fish, postal packages.
8.7.2
Profile triggering
The camera will acquire each profile based on an external input signal. There are two
possibilities:
•
Connect an external input signal to the line trigger input of the device. (Activating
this mode is only possible using GenICam or
GenIStream
.)
•
Use an encoder for profile triggering. In that case, pulses are received on the
encoder inputs. The distance between the two profiles is determined by the num‐
ber of pulses received.
Figure 52: Profile triggering GUI reference
Triggering each profile from an encoder will keep the object proportions if the object
motion, tracked by the encoder, changes. Four-phase encoders also allow tracking
different motion patterns,
see "Encoder triggering", page 57
. The motion pattern is
defined by the
Encoder mode
parameter.
When triggering with an encoder the maximum line rate is still controlled by
Timed profile
rate
used in
Free-running
mode. Thus you might need to change
Timed profile rate
when in
Encoder
mode to be able to set
Exposure time
to your wanted value.
Select
Free-running
or
Encoder
using the radio buttons.
8
CONFIGURATION
56
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
