Operating Instructions
Chapter
10
CLX490
8009237/RB47/2007-08-03
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-43
Appendix
Dynamic focus control
Function for shifting the focal point of the laser beam across a wide range in the reading
plane. The dynamic focus control function is event controlled (e. g. by the distance detector)
or dynamic in the
Ö
Autofocus function.
Error messages
Messages in
Ö
plain text or coded (3-digit) that are used to identify a malfunction on the
CLX in Reading mode. The messages are output on the auxiliary interface only. Exception:
ST = 3 (device error), which is also output on the host interface. The error messages can
be displayed in the Terminal emulator in the "CLV-Setup" program.
Error status
Identifier output with the reading result by the CLX for errors that were diagnosed while the
bar code was being read. The entry for the host interface is made in the "Code-Info/Sepa-
rator" block of the
Ö
data output string and must be enabled using the parameters (for the
CLX disabled by default).
Focus position
Distance of the focal point of the emitted laser beam in front of the reading window. Can be
varied using the optical components in the CLX. Creates a distance-specific depth of field
(DOF) in which he bar code can be detected.
Functional interfaces
Digital switching inputs and outputs on the CLX.
Good Read
The CLX successfully detected a bar code or the required number of bar codes specified by
the evaluation parameters during the
Ö
reading pulse.
Header
Data block in the reading result on the
Ö
host interface. Used as a header in the
Ö
data
output string for the subsequent data content of the bar codes. Contains up to 10 elements,
consisting of reading diagnosis data and/or constants (control characters, letters, digits), de-
pending on the configuration. The "Header" block is empty in the default setting of the CLX.
Host interface
Main data interface on the CLX with configurable data output format. Used to output the
Ö
reading result in telegram form to the host/PLC. Used as gateway in the CAN Scanner
Network. Can be physically switched to RS 232 or RS 422/485. It supports various trans-
mission protocols.
Increment management
Used in certain applications to separate bar codes with identical contents that move during
the reading procedure and assign them to the objects.
Master/slave configuration
Special arrangement for connecting up to max. 10 CLX to one reading station (e. g. left/right
read) using the CAN interface. Thanks to the master, the entire network appears as one de-
vice to the host.
