Lika AM 3616/4096BG Series, User Manual

Page: 16 / 36

AMx36 • SSI & BiSS C-mode
4.5 Counting direction input
The Counting direction input allows to set whether the position value output by
the encoder increases when the encoder shaft rotates clockwise (CW) or
counterclockwise (CCW). The clockwise rotation is intended as shown in the
Figure (CW and CCW rotations are viewed from shaft end). If the Counting
direction input is connected to 0Vdc, the position value increases when the
encoder shaft rotates clockwise; on the contrary, if the Counting direction input
is connected to +Vdc, the position value increases when the encoder shaft
rotates counter-clockwise. If not used, connect the Counting direction input to
0Vdc (standard counting direction, see the Figure).
WARNING
In the BiSS C-mode interface the counting direction can be set also via software
by setting the bit 6
Counting direction
in the register 49
Configuration
. The
Counting direction
parameter implies that the Counting direction input is set
to 0Vdc (standard configuration). Otherwise the resulting will be contrary to
what is expected or intended. Thus when the counting direction is set to CW
-
Counting direction
= 0 = CW-, if the Counting direction input has LOW logic
level (0Vdc) the encoder will provide the increasing count when the shaft is
turning clockwise (and the decreasing count when the shaft is turning counter-
clockwise); on the contrary if the Counting direction input has HIGH logic level
(+Vdc) the encoder will provide the increasing count when the shaft is turning
counter-clockwise (and the decreasing count when the shaft is turning
clockwise). When the option CCW is set -
Counting direction = 1 = CCW-, if the
Counting direction input has LOW logic level (0Vdc) the encoder will provide the
increasing count when the shaft is turning counter-clockwise (and the
decreasing count when the shaft is turning clockwise); on the contrary if the
Counting direction input has HIGH logic level (+Vdc) the encoder will provide
the increasing count when the shaft is turning clockwise (and the decreasing
count when the shaft is turning counter-clockwise).
MAN AMx36 SSI_BiSS E 1.1.odt 4 - Electrical connections 16 of 36