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It should be noted that among the five uninterpolated axes (at a given time):
- only one axis can be moved by NMA using the jogs or handwheel
- the other four (maximum) uninterpolated axes are not moved (at least not directly).
However, if the RTCP function is enabled, an uninterpolated axis may be moved
indirectely
- all the other axes are normally interpolated.
To be declared as uninterpolated, a CNC axis must:
- be servoed
- not belong to another group.
Uninterpolated axes can belong to any one of the eight axis groups, but the RTCP
function is restricted to group 0.
REMARK In no case can the N/M AUTO function be used to combine two
movements on the same axis.
9.1.3 Errors in N/M AUTO
Error message 99 is generated when:
- more than five external parameters E912xx are set
- parameter E912xx is set but associated axis xx is not servoed
- parameter E912xx is set in a part programme but the associated axis xx belongs
to another group.
9.1.4 Processing Example
For example, a rotary C axis in controlled as an NMA axis using the handwheel. Via
the RTCP function, this axis controls the X, Y and Z axes (which are programmed
normally).
At all times, the CNC monitors the travel, speed and acceleration on the X, Y, Z and
C axes.
For this example, it should be noted that:
- an axis declared as uninterpolated can still be programmed
- in this case, interpolation continues, but is inoperative (i.e. it does not directly
cause any movement). However, as soon as the axis stops being uninterpolated,
it is possible to resume the programmed path without even waiting for the end of
the current block.
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