Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
Interval, otherwise the flag will always be active as long as the timer is running. Choose
Active Timer Flag to set the Timer Flag to Low (0) or High (1) when active.
Enable by: Depending on the setting of Enable on (High level or Low level), the timer is
only started when the corresponding level applies. In both Single shot and Continuous
mode the timer is stopped (reset) immediately if this level is no longer active. The values
at the outputs are deleted, or reset to 0, in this case.
The procedure can be run once only (Type: Single shot) or continually repeated (Type:
Continuous) as long as a corresponding signal is active on Start/Stop with.
In the case of single shot and Start on: High level, a positive edge starts the timer and
the next positive edge only restarts the timer when the time has elapsed. In continuous
mode, the timer starts as soon as a High signal (1) is on Start/Stop with, and immedi-
ately restarts at the end of the interval. As soon as no High signal is active any more, the
timer is stopped and is only restarted when a High signal is received.
In the case of single shot and Start on: Low level, a negative edge starts the timer and
the next negative edge only restarts the timer when the time has elapsed. In continuous
mode, the timer starts as soon as a low level (0) is on Start/Stop with, and immediately
restarts at the end of the interval. As soon as no low level is active any more, the timer is
stopped and is only restarted when a low level is received.
Both the Timer Flag and the current time value (Time) are outputted: 0 when the timer
starts, the Interval value at the end of the interval. When the timer is stopped, the inter-
val time is outputted constantly.
7.4.2.21 Standstill detection
The calculation checks two states:
1.
Whether the signal amplitude within a certain period of time is smaller than the
specified value.
2.
Whether the signal is near zero (within defined limits).
If both the Standstill Flag and the Near Zero Flag are set, the Output is set to 0.
Standstill detection
Specify the Time within which the Amplitude must be less than indicated. If this condi-
tion is met, the Standstill Flag is set.
ClipX
Starting up the ClipX
97
Werbung
Inhaltsverzeichnis
