Siemens SIMATIC ET 200S Operating Instructions Manual page 166

1Count5V/500kHz
3.7 Measurement Modes
Integration Time/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 of a T
that remains constant for several cycles, you don't have to continually evaluate status bit
STS_CMP1. Integration times/update times of (1 x T
Because isochronous operation was lost in the last T
integration time is increased by one T
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
1Count5V/500kHz 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.
166
).
DP
cycles, you can recognize the new
DP
DP
) to (3 x T
DP
cycle of the integration time, the
DP
cycle. This does not corrupt the measured value.
DP
Operating Instructions, 02/2007, A5E00124867-05
cycles, however, for this
and a measured value
DP
) are then possible.
DP
Technological Functions