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Output data
Output
data
d
Limit value is compared to the
Limit value
current position value.
2 in [mm]
Output data length: 4 byte
Note!
With this module, the settings for the Preset (module 3), Offset (module 5) and Scaling
(module 6) modules must be taken into account.
8.1.7.19 Module 18: Measurement error tolerance
Description
The measurement error tolerance function is used to configure a time which results in an
extended output of the last position value (module 1) in the event of an error. If the position
value changes momentarily to zero, e.g. due to a brief interruption of the laser beam, soiling
of the bar code tape or other short-term disturbances, the BPS transmits the last valid posi-
tion value.
If the error disappears within the configured time, the control notices nothing or only a small
change in the position value. The availability of the system is thereby ensured. No new
values are delivered by the BPS 34, however, for a period of time extending up to the config-
ured tolerance time. With the "delay error output" parameter, an integration error (corre-
sponds 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, a position value of
zero is output.
Parameters
Parameter
Description
a
Specifies the time for the output
Position
tolerance
of the last position value follow-
time in
ing an error
[ms]
b
Delays the output of an integra-
tion error by the configured tol-
Delay error
erance time.
output
Parameter length: 3 byte
Hex coding of module 18 "Measurement error tolerance"
The value listed in the table shows the hex coding of the default settings.
Leuze electronic
Description
addr.
Rel.
addr.
Device parameters and interfaces
Rel.
Data
Value range
type
0
sign32 -10,000,000 ... 10,000,000
Data
Value range
type
unsign
0
0 ... 65,535
16
0: No, error delay deactivated
unsign
2
1: Yes, error delay
8
activated
BPS 34
Default
Unit
CR to
module
0
mm
–
Default
Unit
CR to
module
50
ms
–
1
–
–
77
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