N/M AUTO Function
en-938872/2 9 - 7
9
9.2 Using the N/M AUTO Function
When using the N/M AUTO function, a physical axis xx can be declared as
uninterpolated:
- on the fly
- with the machine stopped (i.e. CYHLD LED lit or INCYC LED unlit).
The PLC programme must enable and/or confirm the N/M AUTO state by setting
%W2.1=1. Physical axis xx is then an uninterpolated axis and can be moved by the
axis jogs or handwheel.
%R2.1 (E_NMAUTO) is the report of the CNC. This bit is accessible for read only and
is set as soon as the N/M AUTO function is enabled, i.e. when at least one axis can
be moved in NMA mode.
%W802.B (group 8 potentiometer) is used to control the feed rate on the NMA axis
moved by jogs.
%W4.1 (VITMAN1) and %W4.2 (VITMAN2) are taken into account as in manual
mode. These bits define the speed of movement when the handwheel or axis jogs
are used.
Example of Use
E91202=1 is programmed.
Two cases are possible depending on the state of %W2.1 (C_NMAUTO) when
E91202 goes high.
Case 1: Axis declared as uninterpolated on the fly
If the PLC has already enabled the N/M AUTO function:
When parameter E91202 goes high, variable %W2.1(C_NMAUTO) is already set.
Physical axis 2 is immediately set to uninterpolated state. A report is available for the
PLC and %R2.1 (E_NMAUTO) goes high.
Case 2: Axis declared as uninterpolated with machine stopped
If the PLC has not yet enabled the N/M AUTO function:
When parameter E91202 goes high, variable %W2.1 (C_NMAUTO) is low. The state
of physical axis 2 remains unchanged. A report is available for the PLC and %R2.1
remains low.
If the PLC subsequently enables the N/M AUTO function:
Variable %W2.1 (C_NMAUTO) goes high, but the state of physical axis 2 remains
unchanged until the next cycle stop.
As soon as the machine stops (CYHLD LED lit, INCYC LED unlit), physical axis 2 is
set to uninterpolated state and %R2.1 (E_NMAUTO) goes high.
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