Appendix
A.4 Technology alarms
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC
383
Technology alarm 531
Alarm reaction: Remove enable
Restart: See "Restart" column
Alarm text
Solution
Restart
Positive HW limit switch reached.
Acknowledge the alarm.
Movements in the negative direction are al-
lowed after acknowledgment.
-
Negative HW limit switch reached.
Acknowledge the alarm. Movements in the
positive direction are allowed after acknowl-
edgment.
-
Incorrect traverse direction with active hardware limit switch
The programmed motion direction is disabled
due to the active hardware limit switch. Retract
the axis in the opposite direction.
-
Hardware limit switch polarity is reversed, axis cannot be
freed
Check the mechanical configuration of the
hardware limit switch.
X
Both hardware limit switches are active, axis cannot be freed Check the mechanical configuration of the
hardware limit switch.
X
Technology alarm 533
Alarm reaction: Stop with maximum dynamic values
Restart: Not required
Alarm text
Solution
Software limit switch reached.
Negative
.The software limit switch has been approached from an
ongoing movement.
Acknowledge the alarm.
Move the axis in the positive direction away from the
software limit switch.
Positive
The software limit switch has been approached from an
ongoing movement. Acknowledge the alarm. Move the
axis in the negative direction away from the software
limit switch.