Application Example - Siemens SINUMERIK Series Function Manual

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.
3.8.6

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
Initial situation
Machine axis 4 is referred and is in Position 0 degree. This corresponds to the 1st fixed
position and is output through the NC/PLC interface signal:
DB31 DBX75.0 = 1 (Bit 0-2 = 1)
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
H1: Manual and handwheel travel
3.8 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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