Supplementary Conditions; Application Example - Siemens SINUMERIK 840D sl Function Manual

4.9.4

Supplementary Conditions

Axis is indexing axis
The axis is not traversed and an alarm is output if the axis to be traversed is an indexing axis
and the fixed point position to be approached does not match an indexing position.
Frames active
All active frames are ignored. Traversing is performed in the machine coordinate system.
Offset values active
Active offset values (DRF, external zero offset, synchronized action offset $AA_OFF, online
tool offset) are also traversed. The fixed point is a position in the machine coordinates system.
An alarm is issued if an offset movement (DRF, external zero offset, synchronized action offset
$AA_OFF, online tool offset) is made during a fixed point approach in JOG. The position of
the fixed point to be approached in the machine coordinates system is not reached; instead a
position that would have been reached without active offset movement is reached. The NC/
PLC interface signal DB31, ... DBX75.3-5 corresponding to the fixed point is not output.
Working-area limitations
Working-area limitations (in BCS and WCS) are considered and the axis motion is stopped on
reaching the limits.
4.9.5

Application example

Target
A rotary axis (machine axis 4 [AX4]) is to be moved to Fixed Point 2 (90 degrees) with the
"Approaching fixed point in JOG" function.
Parameter setting
The machine data for the "Approaching fixed point" function of machine axis 4 are
parameterized as follows:
MD30610 $MA_NUM_FIX_POINT_POS[AX4] = 4
MD30600 $MA_FIX_POINT_POS[0,AX4] = 0
MD30600 $MA_FIX_POINT_POS[1,AX4] = 90
MD30600 $MA_FIX_POINT_POS[2,AX4] = 180
MD30600 $MA_FIX_POINT_POS[3,AX4] = 270
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
H1: Manual and handwheel travel
4.9 Approaching a fixed point in JOG
4 fixed points are defined for machine
axis 4.
1st Fixed point of AX4 = 0 degree
2nd Fixed point of AX4 = 90 degree
3rd Fixed point of AX4 = 180 degree
4th Fixed point of AX4 = 270 degree
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