Commissioning
2
0
1
6
-0
9
35
4
Commissioning
4.1
Specifying the First Direction Decision
To ensure that the read head does not report any error messages after being switched on, a
direction decision must be specified. You can control the direction decision via the
INPUT_SELECTION_DIR_RIGHT and INPUT_SELECTION_DIR_LEFT inputs. .
Figure 4.1
Direction decision via protocol
If a decision on the direction to take is sent to the read head via a protocol, the input signals are
ignored until the read head is reset. .
4.2
Direction Decision
The read head has several ways of following colored tapes and Data Matrix code tapes
depending on the parameterization. Depending on the input signal, the read head follows the
right-hand, the left-hand, or the better lane.
Direction Decision via Input Signal
t
1
0
1
0
INPUT_SELECTION_DIR_
RIGHT
INPUT_SELECTION_DIR_
LEFT
Direction decision
≥ 20 ms
Error 5
Left
Error 5
Left
Right
Input 2
INPUT_SELECTION_DIR_LE
FT
Input 1
INPUT_SELECTION_DIR_RI
GHT
Direction Decision
0
0
No lane is selected
Error code 5
0
1
Follow right-hand lane
1
0
Follow left-hand lane
1
1
Colored tape: follow lane with
better quality
Data Matrix code tape: follow
lane with more detailed
position information
Data Matrix tag: no
significance
Table 4.1