Chapter
4
Operating Instructions
CLV640 Bar Code Scanner
32
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8011975/0000/2008-04-14
Product description
Trigger sources for the switch-over are:
•
Signal at the switching input "Sensor 2" for the max. 2-pole switching
•
Command from the host interface or the integrated timer (e.g. search run) for the max.
8-pole switch-over
•
Reversal points of oscillation mirror for the bilateral deflection on the line scanner with
oscillating mirror
chapter 4.6.4 Oscillating mirror control, page 32
The distance configurations of the switching order are assigned via the programmable
cross-reference list.
4.6.4
Oscillating mirror control
You can manipulate the position of the scanning line for the line scanner with oscillating mir-
ror (CLV640-6000/CLV640-6120) by configuring the oscillating mirror.
In addition to
parking
(fixed scanning line position which can be adjusted) or
continuous
oscillation
independent of the reading pulse,
controlled operation
of the oscillating mirror
also enables optimised operation sequences related to the reading pulse:
•
n-fold oscillation around an adjustable start position within the reading pulse
•
One-shot: one-time deflection (forward and return) per reading pulse from an adjusta-
ble start position
In every oscillation mode, the amplitude can be adjusted separately for each of the two de-
flection directions. The deflection speed ratio of one deflection direction to the other can be
adjusted within the selected periodic time for the entire oscillation sequence.
Fig. 4-5:
CLV640 Oscillating Mirror: Example of focal position control in search run, here with 6
focus positions
Note
The focus position can be configured using the SOPAS-ET configuration software:
P
ROJECT
TREE
, CLV640, P
ARAMETER
, R
EADING
CONFIGURATION
P
ROJECT
TREE
, CLV640, P
ARAMETER
, R
EADING
CONFIGURATION
, O
SCILLATING
MIRROR
P
ROJECT
TREE
, CLV640, P
ARAMETER
, R
EADING
CONFIGURATION
, F
OCUS
CONTROL
P
ROJECT
TREE
, CLV640, P
ARAMETER
, R
EADING
CONFIGURATION
, D
YNAMIC
READING
CONFIGURATION