Commissioning
2
0
2
0
-1
2
33
4
Commissioning
4.1
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 lane, the left-hand lane, or the better lane.
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 decision direction via inputs
INPUT_SELECTION_DIR_RIGHT (IN2/DIR_RIGHT) and INPUT_SELECTION_DIR_LEFT
(IN1/DIR_LEFT) or via the protocol. .
Direction Decision via Input Signal
Figure 4.1
Direction Decision via Protocol
Direction control via the protocol.
If direction decisions are made via the protocol, subindex 12 "Input source selection" must be
switched to "Software" in the global primary data.
Input 2
INPUT_SELEC-
TION_DIR_LEFT
Input 1
INPUT_SELEC-
TION_DIR_RIGHT 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
t
1
0
1
0
INPUT_SELECTION_DIR_
RIGHT
INPUT_SELECTION_DIR_
LEFT
Dir
ection decision
≥ 20 ms
Error 5
Left
Error 5
Left
Right
Note
If direction decisions are sent to the read head via a protocol, the input signals from the
hardware input are ignored until the read head is reset. .