OPD101
10
4 Function
The photoelectric sensor detects the height profile of the object in the operating range, continually or
upon triggering, by means of triangulation. Besides, the photoelectric sensor has an IO-Link interface.
The sensor can be used in three different modes of operation:
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Switching mode. Switching mode (
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Operation with an IO-Link master. Operation with IO-Link master (
10).
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4.1 Operating modes
4.1.1 Switching mode
In switching mode, the sensor is directly connected to the process control unit and transmits
information on good part / bad part via the switching output.
If the set switching threshold is exceeded/not reached, this is signalled by means of switching
signals on switching output 1/2. The switching outputs act complementary. Electrical connection
(
As an option, the time at which the measurement is taken can be controlled by a process control unit
via the trigger input (pin 5). The sensor signals the successful start of the measurement and the
availability of switching information via switching output 2. The higher-level process control unit
defines the measurement period. Triggered mode (
4.1.2 Operation with IO-Link master
If the sensor is connected to an IO-Link master, parametter setting, triggering and data recording can
be done completely via IO-Link. The cyclic process data include the matching value and the switching
information (good part / bad part).
Additional functions are available via IO-Link:
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detection of the number of trigger processes
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device identification
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When the ROI markers are activated, the two ROIs (regions of interest) are indicated by two pairs
of green markers.
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switching off the laser
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profile heights
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object offset in X / Z direction
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statistical evaluations
More information
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IODD
4.1.3 Operation with the “Vision Assistant“ parameter setting software and an
IO-Link master
Via the IO-Link protocol, high-resolution profile images are continually transmitted. The image data of
a profile image is split up into several data packages and transmitted in a sequence of IO-Link data
frames.