上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
Specialized, Concentrated, Focused - 39 -
Detect no REF. point signal in
returning to machine origin
Touch the home switch artificially
Check the related indicators of
"X0, Y0, Z0, W0" on terminal board
Is the indicator on?
Is electric circuit loose?
Check the home switch between
origin and terminal board
Home switch failure, replace it
with a new one
Due to software
failure (Impossible
generally)
Check the wiring of
NK280 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. 3-9 Debugging steps
2) Incorrect motion direction of machine in returning to machine origin may be caused by the following
reasons:
Incorrect polarity of REF. point signal: when the home switch is normally open, the
polarity is ―N‖;
when the home switch is normally
closed, the polarity should be ―P‖.
Incorrect parameter settings: p
lease check the parameters ―X/Y/Z/A direction in backing to
reference point‖ 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/A speed in backing to reference point‖ is too small.
The polarity setting of REF. point signal in software is mismatching with the home switch type. If the
NC-type home switch is adopted and the polarity of REF. point signal is N, the REF. point 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.
