Siemens SINUMERIK 828D Programming Manual page 145

Example:
Program code
...
N20 POS[V]=90 FDA[V]=0
Direction of movement, travel velocity
The axes follow the path set by the handwheel in the direction of the sign. Forward and
backwards travel is possible dependent on the direction of rotation. The faster the
handwheel rotates, the higher the traversing speed.
Traversing range:
The traversing range is limited by the starting position and the programmed end point.
Traverse positioning axis with velocity override (FDA[<axis>]=<velocity>)
In NC blocks with programmed
accelerated or decelerated to the value programmed under
feedrate
target position or decelerate it to zero. The values set as parameters in the machine data
serve as the maximum velocity.
Example:
Program code
N10 POS[V]=... FA[V]=100
N20 POS[V]=100 FAD[V]=200
Traversing range:
The traversing range is limited by the starting position and the programmed end point.
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Description
; Target position = 90 mm, axial feedrate = 0 mm/min and
; path override with handwheel.
; Velocity of axis V at start of block = 0 mm/min.
; Path and speed defaults are set using handwheel pulses
, the handwheel can be turned to accelerate the programmed movement to the
FDA
Description
; Axial feedrate = 100 mm/min
; Axial target position = 100, axial feedrate = 200 mm/min
; and velocity override with handwheel.
; Acceleration from 100 to 200 mm/min in N20. The handwheel can be
; used to vary the velocity dependent on the direction of rotation
; between 0 and the maximum value (machine data).
7.8 Feedrate with handwheel override (FD, FDA)
, the feedrate from the last programmed
FDA[...]=...
Feed control
FA
. Starting from the current
FDA
value is
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