Operating Instructions
Chapter
10
CLV 45x Bar Code Scanner
Appendix
8 009 139/K949/06-06-2002
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-63
SMART decoder
Specially developed
Ö
decoder for reading bar codes with an extremely small code height
(
Ö
aspect ratio > 1:3) and for poor-quality or contaminated code prints.
Specification diagrams
Diagrams for reading the resolution-specific depth of field (DOF) for specific focus positions.
Standard decoder
Tried-and-tested
Ö
decoder of the CLV product family. Suitable for applications with an ade-
quate code height, limited tilt, and high-quality code prints.
Storage in the CLV
The application-specific
Ö
parameter record can be stored temporarily or permanently in
the CLV. If it is stored temporarily in the RAM, it is lost as soon as the supply voltage is swit-
ched off. Parameter records that are stored permanently are transferred to the EEPROM in
the CLV and remain active as the current data record when the power supply is switched
off. The default setting is not affected by this and is stored in a read-only memory (ROM).
Switching sequence
Function of the focal position changeover. Sequence of the focal positions to be set conse-
cutively with the corresponding depths of field areas. To this purpose the number of active
Ö
distance configurations are entered in the assignment table at the desired point.
System messages
Messages in
Ö
plain text with which the CLV signals its operating and device status. The
messages are output on the terminal interface only. The error messages can be displayed
in extended mode of the
TERMINAL
EMULATOR
in the CLV-Setup user interface.
Teach-in
Method of programming the information required to adjust the CLV to the reading situation
in Parameter mode. Example: Teaching-in match code 1 or teaching-in the application-
specific bar code in
Ö
Auto Setup.
Terminal interface
Auxiliary data interface (RS 232) on the CLV with fixed data output format. Used to connect
the CLV-Setup program to the CLV so that it can operate and configure the device. Also used
to output
Ö
system and error messages. Can have various functions assigned.
Terminator
Data block in the read result on the
Ö
host interface. Used to terminate the preceding data
contents of the bar codes. Contains reading diagnosis data and/or constants (e. g. charac-
ters), depending on the configuration (for the CLV 45x empty by default setting).
Upload
Method of transferring the
Ö
parameter record from the CLV to the PC using the
Ö
CLV-
Setup user interface. CLV-Setup either always loads a complete copy of the current
parameter record from the RAM of the CLV (U
PLOAD
TO
CLV) or only the parameter currently
being edited by means of the pop-up menu called up with the right-hand mouse button
(U
PLOAD
PARAMETER
). Displays the current parameter values on the tabs. Prerequisite for mo-
difying the current parameter record.