Functions
Leuze electronic CML 720i Ex 23
4 Functions
This chapter describes the functions of the light curtain for adaptation to different applications and oper-
ating conditions.
4.1 Beam modes
4.1.1 Parallel
In “parallel”-beam mode (parallel-beam scanning), the light beam of eac
h transmitter LED is detected by
the directly opposing receiver LED.
Figure 4.1: Beam path in “parallel”
4.1.2 Diagonal
In “diagonal” beam mode, the light beam of each transmitter diode is received in succession both by the
directly opposing receiver diode as well as by the next receiver diode in the counting direction (i-1) (parallel
and diagonal beam path). This increases the resolution in the middle between the transmitter and receiver.
1 Area with increased resolution
Figure 4.2: Beam path in “diagonal”
Calculation
The number of beams for diagonal-beam scanning n
p
is calculated from the number of beams for parallel-
beam scanning n
d
.
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