Siemens SIMATIC ET 200S Operating Instructions Manual page 59

Integration Time and Update Time in Isochrone Mode
If the integration time/update time lasts several T
measured value in the user program at the bit STS_CMP1 status bit (measurement
completed) of the feedback interface. This enables monitoring of the measuring operation or
a synchronization with the measuring operation. It takes 4 T
message to be acknowledged. The minimum integration time/update time in this case is
(4 x T
If the application can tolerate a jitter in the integration time/update time of T
measured value that remains constant for several cycles, you do not need to continually
evaluate status bit STS_CMP1. Integration times/update times of (1 x T
then possible.
Because isochronous operation was lost in the last T
integration time/update time is increased by one T
measured value.
Note
The value range limits for the integration time/update time must not be exceeded (see tables
for the individual measuring modes).
A violation of the value range limits will result in a parameter assignment error, and the
1Count24V/100kHz will not go into isochrone mode.
Note
When you change the configuration from non-isochrone to isochrone mode and vice versa,
you must always adjust the integration time/update time parameter if you want to keep the
length of the integration time/update time.
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05
).
DP
2.7 Measurement Modes
cycles, you can recognize the new
DP
cycles, however, for this
DP
DP
cycle of the integration time, the
DP
cycle. This does not corrupt the
DP
1Count24V/100kHz
and a
DP
) to (3 x T ) are
DP
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