Programming
4.3 Time-based IO
High-precision input/output with Time-based IO
Function Manual, 11/2019, A5E33454822-AC
37
The following figure shows an example of the behavior of LEC when a read-in job is started
with EdgeSel = 3 (rising and falling edge, order depending on occurrence).
T
APP
Application cycle
Rn
Specified times of a positive DI edge
Fn
Specified times of a falling DI edge
The module can count a maximum of seven edges per application cycle. LEC = 7 means
therefore that seven or more edges have been counted.
Reaction to error
The Error output indicates if the instruction was processed correctly. In the event of an error,
the cause of the error is displayed at the Status output.
Содержание SIMATIC ET 200AL
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