Specialized Concentrated Focused
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32
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Operation
Detect no REF. point signal in
returning to machine origin
Touch the home switch artificially
Check the related indicators of
"X0, Y0, Z0" on terminal board
Is the indicator on?
Is electric circuit loose?
Check the electric circuit between
origin and terminal board
Home switch failure, replace it
with a new one
Due to software
failure (Impossible
generally)
Check the wiring of
NK200 host and
terminal board
Issues settled
Is wiring loose?
Fasten the
connection wiring
Whether the circle points ahead of
related ports under "port" screen of
software interface turn green
False
False
False
True
True
False
True
True
Fig. 3-14 Debugging Steps
2) Incorrect motion direction of machine in returning to machine origin may be caused by the following
reasons:
Incorrect polarity of origin signal: when the origin switch is normally
open, the polarity is “NO”; when
the origin switch is normally closed,
the polarity should be “NC”.
Incorrect parameter settings: please check the parameters
“X/Y/Z direction in back to refer” and
modify the corresponding parameters.
3) Low coarse positioning speed in returning to machine origin may be caused by the below reasons:
The setting value of
parameter “X/Y/Z speed in back to refer” is too small.
The polarity setting of origin signal in software is mismatching with the origin switch type. If the
NC-type origin switch is adopted and the polarity of origin signal is NO, the origin signal is valid at
the beginning of backing to machine origin, so the machine will slowly move away from origin at the
speed of fine positioning.
