Leuze BPS 348i - Page 23

Device description
Leuze electronic GmbH + Co. KG BPS 348i 23
1
2
000040 000044 000048 015000 015004
000040 000044 000048 015004
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1 Control barcode perfectly affixed on the barcode tape
2 Control bar code at small gap between two barcode tapes
Fig.3.14: Correct positioning of the control bar code
NOTICE
Gaps in barcode tape!
Ä Avoid polished and high-gloss surfaces.
Ä Keep the gaps between the two barcode tapes and the control barcode as small as possi-
ble.
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.
NOTICE
1m difference in the bar code position values for correct measurement value switching!
Ä For different BCB value ranges, make certain that the position value has a value distance of
minimum 1m between the preceding position bar code (before the control bar code) and the
subsequent position bar code (after the control bar code).
If the minimum distance between the barcode values is not maintained, position determina-
tion may be faulty.
ð 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.
• The end of the preceding bar code tape and the start of the subsequent bar code tape can end and be-
gin, respectively, with completely different position bar codes.
• Position value 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.
The output position value is thereby always uniquely assigned to one BCB.