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ObjectC 100
Programmer's
Guide
24
http://csa.cedes.com/
© CEDES Safety & Automation AG
4.2.
Beam counting direction
For all of the functions described above, the individual beams must have a numbering system. This system
depends on the orientation of the light curtain and is explained in Figure 10.
There are two ways to number the beams in the Object100 light curtain:
•
Standard beam counting direction: Beam 1 (first beam) is located at the connector end of the light curtain.
•
Reverse beam counting direction: Beam 1 (first beam) is located at the physical end of the light curtain
(inverted).
Figure 10: Object100 beam definitions and beam counting direction
Table 51: Reference to Figure 10
Parameter
Description
Reference beam
Explanation
"fb_offset"
Number of blanked beams from the beginning of
the monitoring field
Blanked
These beams will be totally
ignored, and not used in any
evaluation process
"lb_offset"
Number of blanked beams from the end of the
monitoring field
Overheight
Beams which when interrupted,
cause the Overheight output to
be activated
"oh"
Lowest beam of the Overheight zone (incl.)
Standard beam counting direction
Reverse beam counting direction