Siemens SINUMERIK 828D Programming Manual page 421

Supplementary conditions
● Measurement with deletion of distance-to-go
● Contour monitoring
● Positioning axes
● Link and container axes
● Travel to fixed stop is not possible:
● If the torque limit is reduced too far, the axis will not be able to follow the specified
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
"Measure with deletion of distance-to-go" (
cannot be programmed at the same time in one block.
Exception:
One function acts on a path axis and the other on a positioning axis or both act on
positioning axes.
Contour monitoring is not performed while "Travel to fixed stop" is active.
For "Travel to fixed stop" with positioning axes, the block change is performed
irrespective of the fixed stop movement.
Travel to fixed stop is also permitted for link and container axes.
The status of the assigned machine axis is maintained beyond the container rotation.
This also applies for modal torque limiting with FOCON.
References:
– Function Manual, Extended Functions; Several Control Panels on Multiple NCUs,
Distributed Systems (B3)
– Programming Manual, Job Planning; Subject: "Travel to fixed stop (FXS and
FOCON/FOCOF)"
– With gantry axes
– For concurrent positioning axes that are controlled exclusively from the PLC (
be selected from the NC program).
setpoint; the position controller then goes to the limit and the contour deviation increases.
In this operating state, an increase in the torque limit may result in sudden, jerky
movements. To ensure that the axis can follow the setpoint, check the contour deviation
to make sure it is not greater than the deviation with an unlimited torque.
Supplementary commands
14.6 Travel to fixed stop (FXS, FXST, FXSW)
command) and "Travel to fixed stop"
MEAS
must
FXS
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