Siemens SINUMERIK 840Di Diagnostic Manual page 361

11/2006
20052 Channel %1 axis %2 already active
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axis is to traverse as machine axis in JOG mode via the jog keys on the machine control panel.
However, this is not possible because:
1. It is already traversing as geometry axis (through the channel-specific interface DB 21 - 28, DBX
12.6, DBX 12.7, DBX 16.6, DBX 16.7 or DBX 20.6 and DBX 20.7) or
2. it is already traversing as machine axis (through the axis-specific interface DB 31 - 48, DBX 4.6 and
DBX 4.7) or
3. a frame is valid for a rotated coordinate system and another geometry axis involved in this is already
traversing in JOG mode by means of the direction keys.
Reaction: Alarm display.
Remedy: Stop traversing through the channel or axis interface or stop the other geometry axis.
Program Clear alarm with the Delete key or NC START.
Continuation:
20053 Channel %1 axis %2 DRF, FTOCON, external zero point offset not
possible
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: The axis is traversed in a mode (e.g. referencing) that allows no additional overlaid interpolation.
Reaction: Alarm display.
Remedy: Wait until the axis has reached its reference position or terminate reference point approach with
"Reset" and start DRF once again.
Program Clear alarm with the Delete key or NC START.
Continuation:
20054 Channel %1 axis %2 wrong index for indexing axis in JOG mode
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: 1. The displayed indexing axis is to be traversed incrementally in JOG mode (by 1 indexing position).
However, no further indexing position is available in the selected direction.
2. The axis is stationary at the last indexing position. In incremental traversing the working area
limitation or the software limit switch is reached without an indexing position being located in front of
it at which a stop could be made.
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department.
Correct (add to) the list of indexing positions by means of the machine data
Modify MD 10900: INDEX_AX_LENGTH_POS_TAB_1
Modify MD 10910: INDEX_AX_POS_TAB_1
Modify MD 10920: INDEX_AX_LENGTH_POS_TAB_2
Modify MD 10930: INDEX_AX_POS_TAB_2
or set the working area limits or the software limit switches to other values.
Program Clear alarm with the Delete key or NC START.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-361