Siemens SINUMERIK 840D sl Series Diagnostics Manual page 332

Overview of Alarms
- Alarm display.
- NC Stop on alarm.
Remedy: Please inform the authorized personnel/service department. Do not initiate mode change.
Cause the PLC to check the axis and make sure in the PLC program that the axis ends
oscillation if such mode changes take place.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20077
Channel %1 axis %2 programmed position is behind software limit switch %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = "+" or "-"
Definitions: The axis is traversed as an oscillating axis and the target position (reversal position or
end position) is located behind the corresponding software limit switch. The axis is not tra-
versed.
Reactions: - Local alarm reaction.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Specify smaller target position.
Modify MD for SW limit switch.
Possibly activate another SW limit switch.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20078
Channel %1 axis %2 programmed position is behind working area limit %3
Parameters: %1 = Channel number
%2 = Axis number
%3 = "+" or "-"
Definitions: The axis is traversed as an oscillating axis and the target position (reversal position or
end position) is located behind the corresponding valid working area limitation. The axis is
not traversed.
Reactions: - Local alarm reaction.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Specify smaller target position.
Deactivate working area limitation.
Set working area limitation differentially.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20079
Channel %1 axis %2 oscillation path length %3 <= 0
Parameters: %1 = Channel number
%2 = Axis number
%3 = Length
Definitions: The axis is traversed as an oscillating axis and the distance to be traversed is smaller
than or equal to zero. For example, both reversal points are situated on an identical posi-
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005