Siemens SINUMERIK 828D Function Manual page 314

F1: Travel to fixed stop
6.2 General functionality
Inoperative IS signals
The following NC/PLC interface signals (PLC → NCK) have no effect for axes at end stop until deselected (incl.
traversing motion):
• DB31, ... DBX1.3 (axis/spindle disable)
• DB31, ... DBX2.1 (controller enable)
Actual position at fixed stop
System variable $AA_IM[x] can determine the actual position of the machine axis, e.g. for test purposes after
successful "Travel to fixed stop."
Combination with other functions
"Measure with deletion of distance to go" (command MEAS) and "travel to fixed stop" cannot be programmed at
the same time in one block.
Exception:
One function is acting on a path axis while the other is acting on a positioning axis or both functions are acting on
positioning axes.
Contour monitoring
The axis contour monitoring function is inoperative while "Travel to fixed stop" is active.
Positioning axes
When "Travel to fixed stop" is applied toPOSA axes, block changes are made independently of the fixed stop
motion.
Vertical axes
The "Travel to fixed stop" function can be used for vertical axes even when alarms are active.
Should the traversal of vertical axes be aborted as a result of an FXS alarm when "Travel to fixed stop" is active,
the relevant drives are not disconnected from the supply via the VDI interface.
This functionality has the same effect on vertical axes as an electronic weight compensation and can be
configured via machine data:
MD37052 $MA_FIXED_STOP_ALARM_REACTION
Note
Additional description regarding the adaptation for SINAMICS, please refer to the SINAMICS
S120 Function Manual and the Function Manual expanded functions; Compensation (K3);
Chapter: Electronic counterweight.
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions