Inclination sensor JN
16
10.6 Limit frequency digital filter (ISDU index 4101)
With the sensor it is possible to make continuously arising angle values insensitive
to external interfering vibrations.
Using a configurable filter (digital FIR filter) interfering vibrations can be
suppressed. The limit frequency of the filter is set via the FIR filter step (ISDU
index 4101).
10.7 Quadrant correction (ISDU index 4103)
Quadrant correction means an extension of the angle indication to the measuring
range ± 180° (corresponds to ISDU index 4103 = 1).
The following conditions apply to the different angle calculations:
Perpendicular angle: longitudinal (X) and lateral (Y) are corrected.
Euler: only lateral (Y) is corrected.
For the gimbal angles the roll angle is corrected.
Gimbal X: longitudinal X (pitch angle), lateral Y (roll angle)
Gimbal Y: longitudinal X (roll angle), lateral Y (pitch angle)
10.8 Set zero point (system commands 0xE2 and 0xE3 and ISDU index
4105)
To set the zero point the sensor is rotated to the requested position and the current
position is set as "0". In this respect the system command 0xE2 has to be sent via
the IO-Link interface (ISDU index 2 = 0xE2).
The sensor then calculates the offset to the zero point shift and saves it in the
permanent memory. From then on the offset is subtracted from the angle.
To delete the zero point, the system command 0xE3 has to be sent via the IO-Link
interface (ISDU index 2 = 0xE3). The status of the zero point (set or deleted) can
be read at any time via the ISDU index 4105.
10.9 Set teach (system commands 0xE0 and 0xE1 and ISDU index 4104)
Should it not be possible to integrate the inclination sensor into the measured
object so that the coordinate system of the sensor and object coordinate system
match, the teach function enables the creation of a new reference system.
The new reference system x
b
,y
b
,z
b
is defined so that its z
b
direction corresponds to
the direction of gravitation at the teach moment. The x
b
direction of the reference
system results from the projection of the x
s
axis of the sensor to the x
b
y
b
plane
of the reference system. The y
b
axis then corresponds to the direction which is
perpendicular to both the z
b
and the x
b
axis.
To set the teach point, the system command 0xE0 has to be sent via the IO-Link
interface (ISDU index 2 = 0xE0). To delete the teach point, the system command
0xE1 has to be sent via the IO-Link interface (ISDU index 2 = 0xE1).