ADLINK HSL-4XMO - Manual (Page 80)

70 Operation Theory
motor. The up/down counter counts up when the phase of EA sig-
nal leads the phase of EB signal.
The following diagram shows the waveform.
Figure 4-30: 90° Phase Difference Signals
The index input (EZ) signals of the encoders are used as the
“ZERO” reference. This signal is common on most rotational
motors. EZ can be used to define the absolute position of the
mechanism. The input logic polarity of the EZ signals is program-
mable using software function HSL_M_set_home_config(). The
EZ signals status of the four axes can be monitored by
get_io_status().
The feedback position counter will be automatically cleared to “0”
after a home move is complete. Besides setting a position with the
function call, HSL_M_set_position(), it can also be executed at
any time to set a new position value. To read the current command
position use HSL_M_get_position().
X Relative Functions:
HSL_M_set_pls_iptmode()
HSL_M_set_feedback_src()
HSL_M_set_position()
HSL_M_get_position()
HSL_M_set_home_config()