Operating Instructions
Chapter
10
CLV 480 Bar Code Scanner
8 010 080/O824/10-02-2005
©
SICK AG · Division Auto Ident · Germany · All rights reserved
10-65
Appendix
SMART decoder
Specially developed
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decoder for reading bar codes with an extremely small code height
and for poor-quality or contaminated code prints.
Specification diagrams
Diagrams for reading the resolution-specific depth of field (DOF) for specific focus positions.
Splitter
Data block in the reading result of the
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host interface. Used to separate the data content
of the bar codes. Contains up to 5 elements, consisting of constants (control characters,
letters, digits), depending on the configuration. The "Splitter" block is empty in the default
setting of the CLV 480.
Standard decoder
Tried-and-tested
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decoder from the CLV product family. Suitable for applications with an
adequate code height, limited tilt, and high-quality code prints.
Start/stop mode
With this type of separate reading pulse, only one object is located in the reading field for
each reading pulse. If the CLV is used in a stand-alone configuration, the start and end of
the reading pulse are controlled by external sensors, command strings, or with the free run-
ning mode of the CLV. If used in conjunction with other CLVs in a master/slave arrangement
including the OTC 400 (e.g. omni-directional 2-side reading), the CLV receives the reading
pulses via the OTC 400. In this case, the size of the reading field is determined by the dis-
tance between the two external sensors for starting (start of reading field) and stopping (end
of reading field) the reading pulse. The minimum reading distance between two objects must
always be greater than the size of the reading field. The devices are connected via the CAN
interface.
Storage in the CLV
The application-specific
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parameter set can be stored temporarily or permanently in the
CLV. If it is stored temporarily in the RAM, it is lost as soon as the power supply is switched
off. Parameter sets 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
Focus control function for event-controlled switching. Sequence of focus position settings
with associated depths of field. The numbers of the active
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distance configurations are en-
tered at the required position in the assignment table for this purpose.
System messages
Messages
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in plain text used to output the operating status of the CLV. The messages
are output on the terminal interface only and can be displayed in extended mode in the T
ER
-
MINAL
E
MULATOR
of the "CLV-Setup" program.
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 system and error messages. Can be assigned various functions.