1. Counting separated light-colored tabs at a guide
A guide can present separated light-colored tabs close to the sensor so their surfaces return the emitted light. The 2–34 mm range applies to 90% remission reference white, with shorter distances shown for darker targets. External counting logic evaluates the PNP light-switching output after actual tab reflectance, spacing and motion have been checked against the fixed sensing response.
Problem Solved
A close-range tab-passage reference helps external counting logic register separated features where a receiver cannot be mounted across the path, using light reflected from the presented surface.
Tab counting
Reflected-light sensing
Short range
2. Checking a small insert at an assembly nest
An assembly nest can hold a small insert at a repeatable distance facing the sensor. Energetic sensing evaluates reflected light from the insert, with the documented reference-target ranges guiding setup. External inspection logic samples the PNP output while the assembly is stationary. The actual insert material, background and placement tolerance are checked because the sensor has no sensitivity adjustment.
Problem Solved
An insert-present reference helps external inspection logic identify an empty assembly location before the next operation, using a repeatable near-field reflected-light condition at the nest.
Insert presence
Assembly nest
Fixed adjustment
3. Confirming a carrier against a compact stop
A compact stop can present a defined carrier surface within the sensor’s short working distance. The fixed energetic response and PNP light-switching output provide a local arrival condition for external transfer logic. Setup verifies the actual carrier reflectance and seated gap, with darker surfaces evaluated against the shorter reference-target ranges rather than the white-target maximum.
Problem Solved
A seated-carrier reference helps external transfer logic coordinate release at a confined stop, using a nearby target surface and keeping both optical elements on one mounting side.
Carrier arrival
Compact stop
PNP switching