Datalogic DX6400 Installation Manual download pdf (Page 71)

READING FEATURES

The decoder will be able to read the label with a tilt angle between + α max and - α max as

shown in the following figure:

Conveyor

Laser Beam

No Read

0°

No Read

Figure 63 – Reading Zones with α Max

The formulas to calculate α maximum depend on various parameters such as: label height,

number of scans per second, code motion speed, etc.

DX6400 scanners provide omni-directional reading by dividing the scan line into two legs

which produce a cross pattern where angle α is fixed for each leg (see figure below). Since

code reconstruction is used, minimum label heights at different conveyor speeds are given in

the tables in par. 4.4 which guarantee omni-directional reading for your application.

Conveyor

Laser Beams

Figure 64 – Omni-Directional Reading with α Max

4.2 PACKTRACK™

PackTrack™ is a patented operating mode for Datalogic Omni-Directional Reading Stations

used to read and correctly assign codes read on different packs when placed in the scanner

Reading Area at the same time.

In fact, in the following example, the codes of two or more consecutive packs are found at

the same time in the scanner reading area. Therefore, the condition occurs where, in the

sequence of the two packs, the code of the second pack is read first, just before the code of

the previous pack. A system without PackTrack™ would assign the code of the second pack

to first pack and vice versa, thus causing a gross error in sortation.

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Datalogic DX6400 Installation Manual Page 71