P2: Positioning axes
10.4 Positioning axis dynamic response
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
615
POLFA(axis, 0/1/2) ; quick deactivation/activation
WARNING
No preprocessing limitation
If abbreviated notation is used and only the type is changed, make sure that the value for
the retraction position or retraction path in the application is meaningful!
The abbreviated notation should only be used in exceptional circumstances.
This particularly applies after:
A power on, the retraction path or the retraction position must be reset.
POLFA(axis, 1, $AA_POLFA[axis]) ; causes a preprocessing stop
POLFA(axis, 1); does not cause a preprocessing stop
10.4 Positioning axis dynamic response
Velocity
The positioning axes traverse at the axis-specific feedrate programmed for them. As
described under "Motion behavior and interpolation functions (Page 606)", this feedrate is
not influen
ced by the path axes.
The feedrate is programmed as an axis-specific velocity in units of min/mm, inch/min or
degrees/min.
The axis-specific feedrate is always permanently assigned to a positioning axis by the axis
name.
If a positioning axis has no programmed feedrate, the control system automatically applies
the rate set in axis-specific machine data:
MD32060 $MA_POS_AX_VELO (initial setting for positioning axis velocity)
The programmed axis-specific feedrate is active until the end of the program.
Feedrate override
The path and positioning axes have separate feedrate overrides. Each positioning axis can
be adjusted by its own axis-specific feedrate override.
Rapid traverse override
Rapid traverse override applies only to path axes. Positioning axes have no rapid traverse
interpolation (only axial linear interpolation G01) and therefore no rapid traverse override.
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