SICK CLV61x FIELDBUS Series, Руководство по эксплуатации

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line scanner raster scanner
reading distance reading distance
1 2
3 3
Figure 11: Definition of the reading distance and the aperture angle α
1
Line scanner
2
Grid scanner
3
Reading distance
In the specification diagrams ( see "Reading field diagrams", page 47 ) the height of
the reading field dependent upon 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 pitch). Possible
reading angles that can arise between scan line and bar code at all three levels in the
area must be taken into account.
To prevent surface reflection, the rotation angle should be about 105°, see "Avoidance
of surface reflections", page 24 .
β
α
γ
1
2
Figure 12: Line scanner: Read angle occurring between scanning line and bar code
1
Depth of field
2
Reading distance
NOTE
The specified maximum values can only be reached in optimum conditions. The actual
maximum depends on module width, code type, print contrast, ambient light, distance
and scanning frequency.
MOUNTING
5
8017842/ZMG5/2017-06-12 | 8M_DR | SICK O P E R A T I N G I N S T R U C T I O N S | CLV61x Dual Port (PROFINET) 23
Subject to change without notice