Rockwell-automation 2755 AtomScan Bar Code Reader Manual de usuario descargar pdf (Pagina 137)

GlossaryG–2

Publication 2755-6.9

Good Read – The event that occurs when a label’s data is accurately

scanned and decoded.

Intercharacter Gap – The extra space between the last element of

one character and the first element of the adjacent character of a

specific bar code symbol.

Label Height – Regardless of orientation, the measurement taken

along the length of a label’s individual bars.

Label Length – Regardless of orientation, the measurement taken

across the label’s bars from one end to the other, including the quiet

zone.

Label Speed – The rate in inches or centimeters per second at which

a label moves through the scan beam.

Label Transitions – The transition of bars and spaces on a label,

used by the MS-sensor to detect the presence of a label on a package.

Ladder Label Orientation – A bar code label in which the bars are

parallel to the label’s direction of travel.

Match Code – The ability to compare bar code labels being scanned

against a master label that is stored in the memory of the reader.

Menu Configuration – The process of changing factory default

settings via a sequence of menus displayed on a terminal monitor.

Mil – One thousandths of an inch or 0.0254 mm. In bar-coding, a

measurement that identifies a bar code label by the width of its

narrowest element.

Mismatch – An event that occurs when the scanned bar code label

does not match the master label that is stored in the memory of the

reader.

Narrow-bar-width – The width of the narrowest bar of a given

label, expressed in thousands of an inch (or mils).

Non-volatile RAM (NOVRAM) – Random Access Memory that is

available on power-on; that is, after power to the unit has been

recycled.

No Read – A non-read. A condition that occurs when the reader is

set up to decode labels, and no labels are decoded during the read

cycle.

Number of Scans Calculation – The number of times a bar code

label is scanned by the reader during one pass through the laser

beam.

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Rockwell-automation 2755 AtomScan Bar Code Reader Manual de usuario Pagina 137