Siemens SINUMERIK 840D sl Series Diagnostics Manual page 342

Overview of Alarms
- NC Stop on alarm.
Remedy: First stop the axis or deactivate the coupling, then select a new status.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20142
Channel %1 command axis %2: rotation of axis container already enabled
Parameters: %1 = Channel number
%2 = Axis
Definitions: The synchronized action instruction is not allowed on a spindle enabled for the axis con-
tainer rotation. The alarm only occurs if the spindle is handed to another NCU.
Reactions: - NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Initiate the synchronized action instruction before the axis container rotation enable or
after the end of the rotation (depending on the application).
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20143
Channel %1 axis %2 command axis cannot be started as it is controlled by the PLC
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: An attempt has been made to start a command axis by means of a block-related or modal
synchronous action. This start is not possible as the axis is controlled by the PLC.
Reactions: - Alarm display.
Remedy: End control of the axis by the PLC and therefore return it to the channel or start the com-
mand axis with a static synchronous action.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
20144
Channel %1 block %2 motion synchronous action: system variable access not pos-
sible
Parameters: %1 = Channel number
%2 = Block number
Definitions: When using system variables, it is assumed that a read/write operation can access the
required data successfully. In accesses to encoder actual values or digital I/Os, the result
depends on the availability of the corresponding hardware components. If an access
within synchronized actions does not return a valid value, alarm 20144 is output. Outside
synchronized actions, such a read/write access causes block execution to be interrupted
until the result is available. Block execution is subsequently continued.
Reactions: - NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Remedy: Before reading/writing system variables, ensure that it is possible to access the required
hardware components.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20145
Channel %1 block %2 motion synchronous action: arithmetic error
Parameters: %1 = Channel number
%2 = Block number
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005