SICK ICR890, Operating Instructions Manual

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Chapter 10 Operating Instructions
ICR890 High-end CCD Camera System
112
©
SICK AG · Division Auto Ident · Germany · All rights reserved 8011325/0000/2006-10-24
Appendix
10.3 Calculating code length of a bar code
The code length of a bar code corresponds to the number of characters used in the print
image, including the check digit (if available).
To scan (decode) a code, the code length must be input using the SOPAS-ET Configuration
Software. Depending on the bar code type, the code length can, according to the relevant
formula in
Tab. 10-1 , be calculated by counting the bars and spaces .
Calculating the length of a bar code:
1. Determine the bar code type and count the bars or wide elements (bars and spaces),
incl. start and stop characters according to the information in Tab. 10-1 .
2. Calculate the bar code length according to the relevant formula.
3. Enter the results via the SOPAS-ET Configuration Software, as shown in column 4 of the
table.
Bar code type Count Calculating the bar code length
1)2)
Input in the SOPAS-ET
Configuration Software
Code 39 Number of bars Number – 10
I
Code
= —————————
5
Calculated code length
2/5 Interleaved Number of wide elements
(bars and spaces) Number – 1
I
Code
= —————————
2
Calculated code length
EAN n/a 13 characters (normal version)
8 characters (short version) Activate 13-digit
Activate 8-digit
UPC n/a 12 characters (UPC A, normal
version)
6 characters (UPC E, short version) Activate version A
Activate version E
Codabar Number of bars Number – 8
I
Code
= —————————
4
Calculated code length
Code 128
(Character set A) Number of bars Number – 10
I
Code
= —————————
3
Calculated code length
EAN 128 Number of bars Number – 10
I
Code
= —————————
3
Calculated code length
Pharmacode Number of bars Number Number = code length
1) Check digit optional for code 39, 2/5 Interleaved, Codabar.
Check digit is always integrated into the bar code print for EAN, UPC, code 128, code 93, EAN 128 according to the specification
(automatically eliminated when the ICR890 System reading results are generated)
2) Apart from a few exceptions, every printed character represents an ASCII character which has to be decoded.
Extended for code 39. The number of characters in the ICR890 System data string may be greater than the number of characters in the print image for code 93, code
128 and EAN 128, since they are made up of several character sets.
Tab. 10-1: Help table for calculating code length of a bar code