ObjectC 100
Programmer's
Guide
18
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© CEDES Safety & Automation AG
Table 41: Limitation of data transfer
Parameter
Value n
Description
82 [52 Hex]
Limitation of data transfer
0
1-255
Telegram at every event
delay of n times 13.1 ms
t
d
= n
x
13.1 ms
t
d
Delay time [ms]
n
Value of parameter 82 [52 Hex]
An Event (E) triggers a measurement, but it is performed in a delay of the time t
d
. Therefore only an object of a
certain size and speed is recognized (Figure 3 G1, G2 and G4).
Figure 3: The goods trigger events (E) but the measurements are performed with a
delay (M)
2.3.8.
Periodic mode
Periodic mode is activated with these parameters.
Table 42: Parameters for periodic mode
Parameter
Value n
Description
75 [4B Hex]
Periodic measuring
3-255
Periodic mode active with time
constant tp
77 [4D Hex]
Event measuring
0
Event mode inactive
After the periodic time of t = n x 13.1 ms, the response telegrams "
State sector X-axis (64 [40 Hex])"
and/or
"This command delays the
response times according Operation manual (Part No. 104 906 Chapter 11.2)
State sector Y-axis (66 [42 Hex])
"
are transmitted. The periodic mode lends itself to collect the length and/or
profile of an object.
Figure 4: The periodic mode triggers measurements in time intervals of Tn = n x 13.1
ms, T1, T2, T3, T4, T5 etc. ). It lends itself for applications to determine the length or
the profile of goods (G1).
For object G1, according to Figure 4, passing the light curtain with a constant speed, the length is calculated as:
