Controllable Functions - Leuze electronic BPS 34 Operating Instructions Manual

Bar code tape
For error-free function, when using control bar codes it must absolutely be ensured that the
distance between the BPS and bar code tape is selected large enough. The scanning beam
of the BPS should cover three or more bar codes; this is ensured at a distance which lies in
the working range of the reading field curve.
The control bar codes are simply affixed over the existing tape. When affixing the control bar
codes, make certain to cover entire bar codes to ensure that a bar code spacing of 4cm is
maintained.
Figure 6.6:Correct positioning of the control bar code
6.4.1

Controllable functions

Measurement value switching between 2 bar code tapes with different value
ranges
The "MVS" control bar code is used to switch between two bar code tapes. The end of one
tape and the start of the next can end and begin, respectively, with completely different posi-
tion bar codes. If the center of the BPS 34 reaches the transition point of the control bar
code, the device switches to the second tape, provided the next position label is in its scan-
ning beam. As a result, the output position can always be uniquely associated with one tape.
34
Control bar code
correctly affixed on the
bar code tape
Control bar code
incorrectly affixed on
the bar code tape
BPS 34 Leuze electronic