Feedrate Control and Spindle Motion
7.2 Traversing positioning axes (POS, POSA, POSP, FA, WAITP, WAITMC)
Fundamentals
278 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
7.2 Traversing positioning axes (POS, POSA, POSP, FA, WAITP,
WAITMC)
Function
Positioning axes are traversed independently of the path axes at a separate, axis-specific
feedrate. There are no interpolation commands. With the POS/POSA/POSP commands, the
positioning axes are traversed and the sequence of motions coordinated at the same time.
The following are typical examples of positioning axes: pallet feed equipment, gauging
stations or similar.
WAITP enables you to identify a position in the NC program where the program is to wait
until an axis programmed with POSA in a previous NC block has reached its end position.
With WAITMO, the next NC block is loaded immediately when the wait marker is received.
Programming
POS[axis]=...
Or
POSA [axis]=…
Or
POSP [axis]=(…,…,…)
Or
FA [axis]=...
Or
WAITP (axis)=… (programming must be written in a separate NC block)
Or
WAITMC(marker)=…
Parameters
POS [axis]=
Position the axis; the next NC block is not enabled until the position has
been reached
POSA [axis]=
Position the axis; the next NC block is enabled, even if the position has
not been reached
POSP [axis]=(,,)
Approach end position in sections. The first value indicates the end
position; the second the length of the section. Approaching the end
position is defined in the third value with 0 or 1
FA[axis]=
Feedrate for the positioning axis, up to 5 per NC block
WAITP (axis)
Waiting for end of travel of axis. With WAITP, an axis can be made
available for traversing as a reciprocating axis or as a concurrent
positioning axis (by PLC).
WAITMC (marker)
During the braking ramp, WAIITMC loads the next NC block
immediately when the WAIT marker is received.
To Next Page
Loading...
