BECKHOFF DK9222-0909-0005 - Manual (Page 3)

XFC
XFC technology oversampling
Application Note DK9222-0909-0005
communication cycle is divided into 10 intervals. The change of state at the input or output is determined with a precision of
100 µs.
1 2 3 4 5 6 7 8 9
100 μs sample time
10 samples
1 ms cycle time
Fig. 2: Cycle time vs. sample time
Different oversample frequencies can be set depending on the terminal. As a rule, the configurable frequency does not depend
on the bus speed, but on the signal processing within the terminal. Digital input and output terminals currently enable
resolutions of up to 1
µs, with analog signals the smallest possible interval is 10 µs. Even for moderate communication cycles
with only 1 ms, digital signal acquisition is possible with a 1000 th of the time, analog with a 100 th .
New Automation Technology Beckhoff
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