Domino D120i Blue IP, Product Manual

Page: 96 / 224

INSTALLATION INSTRUCTIONS
2-54 L025317 Issue 5 July 2014
POSITIONING CODE ON THE PRODUCT
The position of the code on the product depends on two factors:
(1) The location of the product detector (print-go), relative to the mark
window on the product; and
(2) The ‘Encoder Delay’ setting in the software.
The D-Series laser can start marking as soon as the print-go signal is
received. In most situations, the mark can be moved on the product by
moving the product detector upstream or downstream (i.e. triggering the
marking process to start earlier or later).
By moving the product detector in the opposite direction to the direction of
travel, the print is triggered earlier, and the mark moves further to the left
within the Mark Window. By moving the product detector with the direction
of travel, the print is triggered later and so the mark moves to the right of
the Mark Window.
In some instances, it is not possible to relocate the product detector. The
D-Series includes a feature called ‘Encoder Delay’, that allows the coder to
wait a defined number of encoder pulses before starting the marking
process. Since the encoder is measuring the distance that the product has
travelled, this allows the print-go signal to be delayed by a known and user-
defined distance of product travel.
Note that the encoder delay can only be used to make the marking start
later. In the example above, this would move the mark to the right within the
mark window.
In the example above, if the detector is upstream (before) the laser head,
the print would be triggered too early to print in the mark window, so the
encoder delay would be used to locate the print in the correct position.
Mark Window on Product
Direction of
Travel
Product
Detector