06.03
10.4 Memory configuration
10-297
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
10.4.1
DRAM memory
The free DRAM memory is displayed in machine data
S
MD18050: INFO_FREE_MEM_DYNAMIC (free dynamic memory).
The free DRAM should not be less than 15,000 bytes.
Caution
Before you enlarge DRAM areas, you should first check whether the free
memory is sufficient:
S
MD18050: INFO_FREE_MEM_DYNAMIC (free dynamic memory).
If more dynamic memory is requested than is available, the SRAM and
therefore all user data will be cleared without prior warning on the next NCK
start-up!
Table 10-13
Machine data required to configure the DRAM
Number
Identifier
Name/remarks
Ref.
General ($MN_ ...)
18050
INFO_FREE_MEM_DYNAMIC
Display data of the free dynamic memory
18170
MM_NUM_MAX_FUNC_NAMES
Number of miscellaneous functions
18180
MM_NUM_MAX_FUNC_PARAM
Number of additional parameters
18210
MM_USER_MEM_DYNAMIC
User memory in DRAM
18240
MM_LUD_HASH_TABLE_SIZE
Hash table size for user variables
18242
MM_MAX_SIZE_OF_LUD_VALUE
Maximum field size of the LUD variables
18250
MM_CHAN_HASH_TABLE_SIZE
Hash table size for channel-specific data
18260
MM_NCK_HASH_TABLE_SIZE
Hash table size for global data
18340
MM_NUM_CEC_NAMES
Number of LEC tables
18342
MM_CEC_MAX_POINTS
Max. table size for sag compensation
18500
MM_EXTCOM_TASK_STACK_SIZE
Stack size for external communication task
18510
MM_SERVO_TASK_STACK_SIZE
Stack size of servo task
18520
MM_DRIVE_TASK_STACK_SIZE
Stack size of drive task
Channel-specific ($MC_ ...)
20096
T_M_ADDRESS_EXIT_SPINO
Spindle number as an address extension
/FBW/,
W1
27900
REORG_LOG_LIMIT
Percentage of IPO buffer for enabling the log file
28000
MM_REORG_LOG_FILE_MEM
Memory size for REORG
/FB/, K1
28010
MM_NUM_REORG_LUD_MODULES
Number of modules for local user variables with
REORG
28020
MM_NUM_LUD_NAMES_TOTAL
Number of local user variables
28040
MM_LUD_VALUES_MEM
Memory size for local user variables
28060
MM_IPO_BUFFER_SIZE
Number of NC blocks in the IPO buffer
28070
MM_NUM_BLOCKS_IN_PREP
Number of blocks for block preparation
Free memory
Machine data
10 NC Start-Up with HMI Advanced
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