Application Example - Siemens SINUMERIK 840D sl Function Manual

4.11.6

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:
DB34 DBX75.0 = 1 (Bit 0-2 = 1)
Approaching fixed point 2
The control is switched in the JOG mode.
The "Approaching fixed point" function is activated on Fixed Point 2 via the NC/PLC interface
signal:
DB34 DBX13.1 = 1 (Bit 0-2 = 2)
The actuation is confirmed via the NC/PLC interface signal:
DB34 DB75.1 = 1 (Bit 0-2 = 2)
The Plus traverse key in the machine control table is used to traverse continuously to
approach Fixed Point 2.
The machine axis 4 stops at the 90 degree position. This is reported via the NC/PLC
interface signal:
DB34 DBX75.4 = 1 (Bit 3-5 = 2)
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Manual and Handwheel Travel (H1)
4.11 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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