Bar code tape
Leuze electronic BPS 34 33
TNT 35/7-24V
6.4 Control bar codes
With the aid of control bar codes, which are simply affixed over the bar code tape at the
necessary positions, functions can be activated and deactivated in the BPS 34.
Structure of the control bar codes
The control bar codes utilize code type Code128 with character set B; the position bar
codes, on the other hand, utilize Code128 with character set C. Code 128 with character set
B enables the display of all letters and numbers in the ASCII character set.
System arrangement
Figure 6.5:System arrangement of control bar codes
The control bar code is affixed either within one or between two bar code tapes in such a
way that one position bar code is replaced or two bar code tapes are seamlessly connected
to one another.
Attention!
It must be ensured that only one control bar code is located in the scanning beam at any one
time. Thus, the minimum distance between two control bar codes is determined by the dis-
tance between the BPS and bar code tape and the resulting length of the scanning beam.
The control bar code is decoded in
the marked scans
Control bar code
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