Siemens SINUMERIK 840Di Diagnostic Manual page 125

11/2006
10752 Channel %1 block %2 overflow of local block buffer with tool radius
compensation
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The cutter radius compensation must buffer a variable number of intermediate blocks in order to
enable calculation of the equidistant tool path for each NC block. The size of the buffer cannot be
determined by simple means. It depends on the number of blocks without traversing information in the
compensation plane, the number of contour elements to be inserted and the shape of the curvature
in spline and polynomial interpolation.
The size of the buffer is fixed by the system and cannot be changed via the MDs.
Reaction: Correction block is reorganized.
Local alarm reaction.
Interface signals are set.
Alarm display.
NC Stop on alarm at block end.
Remedy: Please inform the authorized personnel/service department. Reduce the size of the buffer that has
been assigned by modifying the NC program. By avoiding:
- Blocks without traversing information in the compensation plane
- Blocks with contour elements having a variable curvature (e.g. ellipses) and with curvature radii that
are smaller than the compensation radius. (Such blocks are divided up into several subblocks).
Reduce the number of reviewed blocks for collision monitoring (MD 20240
CUTCOM_MAXNUM_CHECK_BLOCKS).
Program Clear alarm with NC START or RESET key and continue the program.
Continuation:
10753 Channel %1 block %2 selection of the tool radius compensation only
possible in linear block
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: Selection of cutter radius compensation with G41/G42 may only be performed in blocks where the G
function G00 (rapid traverse) or G01 (feed) is active.
In the block with G41/G42, at least one axis in the plane G17 to G19 must be written. It is always
advisable to write both axes because, as a rule, both axes are traversed when selecting the
compensation.
Reaction: Correction block is reorganized.
Local alarm reaction.
Interface signals are set.
Alarm display.
NC Stop on alarm at block end.
Remedy: Correct the NC program and put the compensation selection in a block with linear interpolation.
Program Clear alarm with NC START or RESET key and continue the program.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
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