Siemens SINUMERIK 840D sl Programming Manual page 590

Work preparation
3.6 Protection zones
N...
620
710
820
Additional information
"Referenced" axis status
All machine axes considered by CALCPOSI() must be homed.
Circle-related distance specifications
All circle-related distance specifications are always interpreted as radius specifications. This
must be taken into account particularly for transverse axes with activated diameter
programming (DIAMON/DIAM90).
Traversing distance reduction
If the specified traversing distance of an axis is limited, the traversing distance of the other axes
is also reduced proportionally in the <MaxDist> return value. The resulting end point is
therefore still on the specified path.
Rotary axes
Rotary axes are only monitored when they are not modulo rotary axes.
It is permissible that no software limit switches, working area limits or protection zones are
defined for one or more of the relevant axes.
Software limit switch and working area limitation status
Software limit switches and working area limits are only taken into account if they are active
during the execution of CALCPOSI(). The status can be influenced, for example, via:
● Machine data: MD21020 $MC_WORKAREA_WITH_TOOL_RADIUS
● Setting data: $AC_WORKAREA_CS_...
● NC/PLC interface signals DB31, ... DBX12.2 / 3
● Commands: WALIMON / WALIMOF
590
<status> <MaxDist>[0] ≙ X
4223 -13.000
1221 0.000
102121 18.000
<MaxDist>[1] ≙ Y Remarks
0.000 Clearance to C4 is a total of 4 mm due to C2
and _LIMIT[3]. Clearance C2 → N3 of 0.1
mm does not result in limitation of the tra‐
versing distance.
21.213 Frame with translation and rotation active.
The permissible traversing distance in
_DIST applies in the shifted and rotated
WCS.
18.000 The software limit switch of the Y axis is
violated. The calculation of a further tra‐
versing direction is requested with <_TES‐
TLIM> = 17. This direction is in _DIST
(0.707, 0.0, 0.707). It is valid because the
hundred thousands digit is set in <_STA‐
TUS>.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming