Time-based IO basics
2.2 Time behavior of Time-based IO
High-precision input/output with Time-based IO
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Function Manual, 11/2019, A5E33454822-AC
2.2
Time behavior of Time-based IO
2.2.1
Time behavior of standard technology
The time behavior of the inputs/outputs depends on the following factors for standard
technology:
●
CPU program (program structure)
●
Bus cycle times (fieldbus, backplane bus)
●
Cycle time of the I/O modules
●
Internal cycle time of sensors/actuators
A deterministic statement as to
●
when an input event (e.g., sensor signal) has taken place
●
when the output event has an effect on the input event (e.g., output switches)
will become inaccurate due to the time factors listed above.
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