Device description
Leuze electronic
BPS 307i
23
1
Control bar code perfectly affixed on the bar code tape
2
Control bar code at small gap between two bar code tapes
Figure 3.12: Correct positioning of the control bar code
Measurement value switching between two bar code tapes with different value ranges
The
MVS
or
MV0
control bar code is used to switch between two bar code tapes.
• 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 the BPS reaches the transition point of the control bar code, the device switches to
the second BCB, provided the next position label is in the BPS's scanning beam (see figure 3.13).
The output position value is thereby always uniquely assigned to one BCB.
NOTICE
Gaps in bar code tape
Avoid polished and high-gloss surfaces.
Keep the gaps between the two bar code tapes and the control bar code as small as possible.
NOTICE
1 m minimum distance of the bar code values for measurement value switching!
For different BCB value ranges, make certain that the minimum distance 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 (BCB with 40 mm grid): If the last position bar code on the BCB before the control bar code
is
75120
, the following position bar code on the BCB after the control bar code must be at least
75220
.
If the minimum distance between the bar code values is not maintained, position determination may
be faulty.
1
2
000040
000044
000048
015000
015004
000040
000044
000048
015004
