Siemens SINUMERIK 840D sl Function Manual page 360

Detailed Description
2.1 General functionality
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, 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
For further details about adaptations for SIMODRIVE 611 digital or digital (HLA module),
please see:
References:
/FB2/ Function Manual for Extended Functions, Compensation (K3); Section: Electronic
weight compensation
MD37052
With the machine data:
MD37052 $MA_FIXED_STOP_ALARM_REACTION
does not result in disconnection of the drive from the power supply when an alarm is
generated, while the NST DB11, ... DBX6.3 ("Mode group ready") remains active.
Bit value=0:
The alarms have an effect on FXS (drive becomes disconnected as previously).
NST DB11, ... DBX6.3 ("Mode group ready") is reset.
Bit value=1:
The alarms have no effect on FXS. NST DB11, ... DBX6.3
("Mode group ready") remains active.
Bit 0: Alarm 20090
Bit1: Alarm 20091
Bit 2: Alarm 20092
Bit 3: Alarm 20093
Bit 4: Alarm 20094
24
Travel to fixed stop cannot be programmed
Fixed stop is not reached.
Travel to a fixed stop active.
Standstill monitoring on fixed stop is triggered.
Travel to fixed stop aborted.
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Basic logic functions: Travel to fixed stop (F1)