ifm electronic JN2100 v.2.2.0 - Manual (Page 19)

UK
Inclination sensor JN
19
SDO
index
Sub-
index
Type Value Unit r/w Reset
0x6110 0x0 Integer
32
Longitudinal X axis Angle [°] r
0x6111 0x0 u8 Slope long32 operating parameter r
0x6120 0x0 Integer
32
Lateral Y axis Angle [°] r
0x6121 0x0 u8 Slope lateral32 operating parameter r
8 Angle definition (SDO index 2044h)
To be able to adapt the inclination sensor to the different applications as easily
as possible, the measured inclination information is converted into different angle
indications. The requested angle indication is set by selecting the respective
option.
With this angle definition a sensor coordinate system is used which is defined as
follows:
– The mounting plane corresponds to the XY plane.
– The Z axis is perpendicular to the mounting plane (according to the right-
hand rule).
– TheX axis is represented by an edge of the mounting plate which shows in
direction of the printed x arrow.
– The Y axis is then perpendicular to the plane spanned by the Z and X axes.
8.1 Perpendicular angle (SDO index 2044h = 0)
Using the indication of the two perpendicular angles the inclination of the sensor
coordinate system towards the direction of gravitation is described.
The first provided value corresponds to a rotation about the Y axis of the sensor
and is called "longitudinal inclination value" (SDO index 6010h or 6110h).
The value corresponds to the angle [°] which the gravitation vector spans with the
yz plane.
The second provided value corresponds to a rotation about the X axis of the
sensor and is called "lateral inclination value" (SDO index 6020h or 6120h). The
value corresponds to the angle [°] between the gravitation vector and the XZ plane
of the sensor.
In the case of an inclination in a plane (rotation of an axis with the second axis remaining
perpendicular) the perpendicular angle and gimbal angle are always identical.