Siemens Sinumerik 840D sl Diagnostic Manual page 336

Overview of Alarms
NCK alarms
Definitions: The requested command is not permissible in the current axis status for the command axis or spindle.
This alarm occurs with command axes (POS, MOV), spindle commands from motion synchronous
actions (M3/M4/M5, SPOS), coupled motion (TRAILON, TRAILOF) and lead value coupling (LEA-
DON, LEADOF).
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
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 container rotation.
The alarm only occurs if the spindle is handed to another NCU.
Reaction: 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 synchro-
nous action. This start is not possible as the axis is controlled by the PLC.
Reaction: Alarm display.
Remedy: End control of the axis by the PLC and therefore return it to the channel or start the command 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 possible
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 contin-
ued.
Reaction: 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:
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009