Bar code tape
Leuze electronic
BPS 8
25
TNT
35/7-2
4
V
MVS control bar code
With the MVS control bar code, there is precise and reproducible switching between two bar
code tapes with different value ranges.
• The end of the preceding bar code tape and the start of the subsequent bar code tape
can end and begin, respectively, with completely different position bar codes.
• BCB changeover by means of a control bar code always occurs at the same position,
i.e., it serves to change from the preceding tape to the subsequent tape and vice
versa.
• If the center of BPS 8 reaches the center of the MVS control bar code at the transition
position, the value range of the subsequent BCB is switched to – provided the BPS 8
has the next position bar code in the scanning beam(see figure 5.4).
This means the output position value is always uniquely assigned to the preceding or
subsequent BCB.
If, upon reaching the the center of the MVS control bar code, the BPS 8 does not detect the
value range of the subsequent BCB in the scanning beam, the position value of the first BCB
section is still output for half of the label width starting from the center of the MVS control bar
code.
NOTE
1 m minimum distance of the bar code values for measurement value switching!
For different BCB value ranges, make certain that a minimum distance of the printed
value range of 1 m between the preceding position bar code (before the control bar
code) and the subsequent position bar code (after the control bar code) is maintained.
Example: If the last position bar code on the BCB8 before the control bar code is
’075120’, the following position bar code on the BCB8 after the control bar code must
be at least ’075222’ (printed values BCB8 in cm).
If the minimum value range distance of 1 m between the bar code values is not main-
tained, position determination may be faulty.
