Tips for initial commissioning
Leuze electronic
OGS 600
85
TNT
35/7-2
4
V
9.1.2
Changeover between different traces
If the system consists of various traces with different width and/or trace type (light/dark), the
following procedure is recommended.
For each trace, a parameter set with the appropriately adjusted variables must be stored in
the control unit.
The following settings should be stored:
Table 9.1:
Parameters for trace-specific parameter set
9.1.3
Trace markings for application-specific actions
The following approaches are conceivable in order to provide the vehicle with location-
dependent information by means of the trace or additional markings.
Trace width
The width of the trace can be varied. The sensor always outputs the left edge and the right
edge of the trace. The difference between these two values is the width.
The trace width information can be used to inform the vehicle whether e.g. it should move
slower or faster.
Markings next to the trace
Additional markings can be attached next to the trace in order to e.g. create a code.
For example, a 4 bit code can be realized by the presence of detected traces (which satisfy
the filters) at a certain position.
From the process data, the vehicle's control unit recognizes if traces have been discovered
which, owing to the filters, are not output via the process data.
It is therefore possible to design the markings such that they are not detected as a trace.
The positions of the markings can be read out by evaluating
TraceInvalidSubPixel
. In this
way, it is possible to implement a code for system control.
Index name
Comment
TraceWidthMax
TraceWidthMin
TraceTeachThr
Taught threshold (affects the measured trace width)
TraceContrastMin
TraceAmplitudeMin
SwitchTraceWidthFactor
For changeover between a system with 2-way and 3-way switches.