Leuze BPS 8 - Page 78

Configuration / device parameters
Leuze electronic BPS 8 77
TNT 35/7-24V
Measurement error tolerance parameter
The measurement error tolerance function is used to configure a time which results in an
extended output of the last position value in the event of an error. If the position value
changes momentarily to zero, e.g. due to a brief interruption of the scanning beam, soiling
of the bar code tape or other short-term disturbances, the BPS 8 transmits the last valid posi-
tion value.
If the error disappears within the configured time, the control notices nothing. The availability
of the system is thereby ensured. No new values are delivered by the BPS 8, however, for
a period of time extending up to the configured tolerance time. With the Delay error output
parameter, an integration error (corresponds to a missing position value) can be signaled
immediately or after the tolerance time has elapsed. If the error persists after the tolerance
time has elapsed, the last valid position value is output.
Position value in the case of failure parameter
Parameter Description Value range Default Unit CR
Tol erance
time in [ms]
Specifies the time for the
display of the last position
value following an error.
0 … 65,535 50 ms –
Delayed
output of
position
error
Delays the output of an
error by the configured toler-
ance time.
0: No, error delay deacti-
vated
1: Yes, error delay acti-
vated
1 ––
Delayed
output of
error status
Delays the output of an
error in the status byte of
the binary protocol by the
configured tolerance time.
0: No, error delay deacti-
vated
1: Yes, error delay acti-
vated
1 ––
Parameter Description Value range Default Unit CR
Position
value in the
case of fail-
ure
In the case of failure, retain the
last position value or output
zero.
0: Zero
1: Last valid
position value
1 ––
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