4 Programming of Motion Blocks 01.93
4.1 Axis commands
Auxiliary axis
The term “auxiliary axis” designates an axis used for workpiece or tool handling (loader, turret,
magazine etc.) as opposed to actual workpiece machining.
With the SINUMERIK 880 control, the auxiliary axes are programmed in the same way as the
NC main axes, i.e. there is no difference between these two axis types
.
4.1.1 Axis motion without machining G00
Rapid traverse motions are programmed by means of the position data G00 and a target
position specification. The target position can be reached by means of either an absolute
position data input (G90) or an incremental position data input (G91).
The path programmed using G00 is traversed at the maximum possible speed (rapid traverse)
along a straight line without machining the workpiece (linear interpolation).
The maximum permissible axis speed is monitored by the control. This speed is defined as
machine data for each axis. If the rapid traverse is executed simultaneously in several axes,
the traversing speed is determined by the lowest axis speed specified in the machine data.The
preparatory function G00 automatically initiates exact positioning (coarse).
When G00 is programmed, the feedrate programmed under address F remains stored and is
made active again with G01, for example.
4–2
© Siemens AG 1991 All Rights Reserved 6ZB5 410-0HD02
SINUMERIK 880, (PG)
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