BECKHOFF DK9222-0909-0005 User 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
For application notes see disclaimer on the last page