Siemens SIMATIC S5 Manual page 297

IP 266
9.3 Description of Sample Program 1
A workpiece is to be machined on an assembly line comprising several assembly
bays. The following steps are to be carried out at four positions within the
positioning range of the linear axis:
Position 0: Position 0 is the home position of the worktable in the linear
axis's traversing range. It is at this position that a workpiece is
to be placed on the table for machining and at which the
workpiece is to be placed back on the table after machining.
Positions 1 to 3: Holes are to be drilled in the workpiece at these three
positions. When the hole has been drilled at the last of these
three positions, the drive is to return to position 0. The
procedure can be restarted when the workpiece has been
removed from the table.
A traversing program is used to approach positions 0 to 3. External activities in
the STEP 5 program are initiated via M functions. Figure 9-1 shows an installation
suitable for this example.
0
Actual position 100
EWA 4NEB 812 6057-02
Workpiece
Worktable
1 2
400 420
Figure 9-1. Using a Linear Axis
STEP 5 Programming
3
440 [mm]
9-9