5.4
Mounting location
When selecting the mounting location, the following factors are significant:
•
Basic allocation of the scan line to the bar code
•
Reading distance to the bar code and aperture angle α (
).
•
Angle alignment of the device
•
Avoidance of surface reflections
•
Count direction of the reading angle (position of the bar code along the scan line)
5.4.1
Basic allocation of the scan line to the bar code
The basic allocation of the scan line to the bar code on the object depends on the ver‐
sion of the device (line scanner on the front or to the side, grid scanner or line scanner
with oscillating mirror).
Line scanner
1
Reading distance
4
Reading distance
4
Reading distance
4
Central position = default setting
5
Raster scanner
2
Line scanner with oscillating mirror
3
Figure 16: Allocation of scanning line(s) to bar code and conveyor direction
1
Line scanner
2
Grid scanner
3
Line scanner with oscillating mirror
4
Reading distance
5
Middle position = default
5.4.2
Reading distance to the bar code and aperture angle α
The maximum distance from the reading window of the device to the bar code may not
exceed the design values for the device. Because of the V-shaped deflection of the
beams, the usable length of the scan line for evaluation (reading field height) depends
on the reading distance.
In the specification diagrams, the height of the reading field dependent on the reading
distance is shown for differing resolutions (module widths),
5.4.3
Angle alignment of the device
The optimum alignment of the device is achieved when the scan line crosses the
stripes of the bar code as close to a right angle as possible (tilt and inclination). Possi‐
ble reading angles that can arise between scan line and bar code at all three levels in
the area must be taken into account.
In order to prevent surface reflections, the angle of rotation must be approx. 15° out of
plumb to the bar code,
see "Avoidance of surface reflections", page 32
MOUNTING
5
8019588/129Z/2019-02-07 | SICK
O P E R A T I N G I N S T R U C T I O N S | CLV63x, CLV64x, CLV65x
31
Subject to change without notice