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Installation manual
CNC 8055
CNC 8055i
7.
CONCEPTS
SOFT: V02.2X
Main and second spindle
Considerations
If at the time when the home search is requested, the spindle is sitting on the home switch, the spindle
will back up (in the direction opposite to the one indicated by "REFDIREC (P33) ") until it is off the
switch and then, it will go on to search home.
Care must be taken when placing the home switch and when setting feedrates "REFEED1 (P34)"
and "REFEED2 (P35)". The home switch (1) will be installed so the marker pulse (2) will be found
in the zone corresponding to feedrate "REFEED2" (P35). If there is no room for it, reduce the value
of "REFEED1 (P34)". For example, for encoders whose consecutive marker pulses are very close
to each other.
When the spindle does not have a machine reference (home) switch (spindle parameter DECINPUT
(P31) = NO), the CNC will move the spindle at the feedrate set by spindle parameter REFEED2 (P35)
until the first marker pulse from the current position is found, thus ending the home search.
Fagor rotary encoders provide one positive reference pulse per revolution.
Do not mistake the type of pulse provided by the feedback system with the value to be assigned
to spindle parameter REFPULSE (P32).
This parameter must indicate the type of active flank (leading or trailing edge), positive or negative
of the reference mark (Io) used by the CNC.
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