ADLINK Technology cPCI-8168, User Manual

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68 Operation Theory
The following diagram shows the waveform.
The index input (EZ) signal is the zero reference in a linear or
rotary encoder. The EZ can be used to define the mechanical zero
position of the mechanism. The signal logic must also be set cor-
rectly in order to get a correct result.
4.3.3 In position signal
The in-position signal is an output signal from the motor driver. It
tells the motion controller a motor has reached a position within a
predefined error. The predefined error value is an in-position
value, commonly refered to as an INP value. After the motion con-
troller issues a positioning command, the motion busy status will
keep true until the INP signal is ON. Users can disable the INP
check for motion busy flag. If it is disabled, the motion busy will be
FALSE when the pulse command is sent.