SICK Omni CLX 490-0010, Руководство по эксплуатации

Страница: 32 / 152

Chapter 4 Operating Instructions
Compact OMNI Scanner
4-4
© SICK AG · Division Auto Ident · Germany · All rights reserved 8 009 237/0000/07-05-2002
Installation
4.2.7 Distance between the CLX and the bar code
Basic alignment between the CLX and bar code
The CLX is used for reading omnidirectionally oriented bar codes on the lateral or upper
sides of objects. Fig. 4-4 shows the basic alignment of the CLX.
Reading distance to the bar code
The distance between the reading window of the CLX and the bar code must not exceed
the technical limits. The height of the reading field is shown as a function of the reading
distance for various resolutions (module widths) in Chapter 10.2.2 Reading performance
data Compact OMNI Scanner, Page 10-2 .
Fig. 4-4 shows the definition of the reading distance a from the reading window.
Due to the X-principle of beam deflection, the reading field height (for evaluating the useful
length of the scan line) depends on the readling distance.
Angular alignment of the CLX
All possible reading angles that can occur between the scan line and the bar code must be
taken into consideration ( Fig. 4-5 and Table 4-1 ).
Fig. 4-4: Definition of the reading distance a to bar code and convoyer direction
Reading distance a
Fig. 4-5: Reading angle between the scan line and the bar code
α :
Azimuth angle (tilt)
β:
Angle of inclination (pitch)
γ:
Angle of rotation (skew)
Reading
range
Reading
distance
Angle Limit value
Tilt
α
(azimuth) Omnidirectional
Pitch
β
Max. 45
°
Skew
γ
Max. 45
°
Table 4-1: Permissible reading angles between the scan lines and bar code