Siemens SINUMERIK 840Di Diagnostic Manual page 172

Overview of Alarms
NCK alarms
12460 Channel %1 block %2 maximum number of symbols exceeded with %3
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Source string
Definitions: The max. number of variable definitions (GUD, LUD), macro definitions, cycle programs and/or cycle
parameters (PROC instruction) that the controller's data management system is able to handle has
been exceeded.
If this alarm occurs in conjunction with alarm 15175, not enough memory for the preprocessing of the
cycle program definitions is available (PROC instruction).
If this alarm occurs in conjunction with alarm 15180, then this alarm shows the name of the file (INI or
DEF file) causing the error.
(For a list of names of INI files and their meaning -> please refer to alarm 6010)
Reaction: Correction block is reorganized.
Interface signals are set.
Alarm display.
Remedy: Generally reduce the number of symbols in the affected block (possibly by using the array technique
or by using R parameters), or adapt the corresponding machine data (see below).
$MC_MM_NUM_LUD_NAMES_TOTAL with error in LUD blocks (i.e. if more variable definitions were
made in the active part program than allowed by the MD).
GUD data blocks can cause errors as part of the 'initial.ini download' process (e.g. in the case of a
series start-up) or by selective activation via PI service _N_F_COPY (activate GUD via HMI dialog).
If alarm 15180 refers to a GUD definition file, then machine dates
$MN_MM_NUM_GUD_NAMES_NCK and/or $MN_MM_NUM_GUD_NAMES_CHAN are set to a too
small value.
Macros are loaded during POWER ON/NCK-RESET or selectively via PI servicc _N_F_COPY
(activate Makro via HMI dialog). If alarm 15180 refers to a macro definition file, then machine date
$MN_MM_NUM_USER_MACROS is set to a too small value.
Cycle program definitions (PROC instruction) are reloaded at each POWER ON/NCK-RESET. In case
of failure check parameter %3 to find out whether the name of the cycle program has caused the error
- in this case the value of machine data $MN_MM_NUM_MAX_FUNC_NAMES should be increased,
or whether the name of a cycle call parameter has caused the error - in this case the value of machine
data $MN_MM_NUM_MAX_FUNC_PARAM should be increased.
Program Clear alarm with NC START or RESET key and continue the program.
Continuation:
2-172
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006