Datalogic SG4 FIELDBUS Series, Instruction Manual, Page: 82 / 136

FUNCTIONS
72 SG4 EXTENDED
Floating Blanking with Total Surveillance
Floating objects can move up or down intercepting different beams while moving; the
objects can't overlap nor change relative positions.
Object must be always present in the protected area and intercept the configured num-
ber of beams with a mandatory fixed tolerance of one beam; that is necessary since a
moving object will always intercept a different number of beams.
Figure 60 - Floating Blanking with total surveillance
Floating Blanking with Partial Surveillance
Floating objects can move up or down intercepting different beams while moving; they
can even get out of the protected area or intercept a number of beams minor than the
configured one.
Adjacent to this zone fixed blanking only can be configured; with such fixed blanking
zones floating objects can overlap and even change relative positions without causing
the switching of the OSSDs.
Figure 61 - Floating blanking with partial surveillance