ADLINK Technology PCI-8102, User Manual, Page: 80 / 210

70 Operation Theory
The following diagram shows the waveform.
The index input (EZ) signal is as the zero reference in linear or
rotary encoder. The EZ can be used to define the mechanical zero
position of the mechanism. The logic of signal must also be set
correctly to get corret result.
4.3.3 In Position Signal
The in-position signal is an output signal from motor driver. It tells
motion controllers a motor has been reached a position within a
predefined error. The predefined error value is in-position value.
Most motor drivers call it as INP value. After motion controller
issues a positioning command, the motion busy status will keep
true until the INP signal is ON. Users can disable INP check for
motion busy flag. If it is disabled, the motion busy wll be FALSE
when the pulses command is all sent.