Siemens SINUMERIK 840D Simodrive 611 digital - Dynamic RAM

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6.7 Memory configuration
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SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
6.7.1 Dynamic RAM
Set the following machine data:
Table 6-11 MD for DRAMmemory breakdown
MD for DRAM Meaning
MD 18242: MM_MAX_SIZE_OF_LUD_VALUE This data is set to 8192 bytes for “cycle 95”.This MD can be
reduced to 2048 if cycle 95 is not used.
MD 18351: MM_DRAM_FILE_MEM_SIZE Size of the part program memory in DRAM
MD 28040: MM_LUD_VALUE_MEM Memory size for local user variables.
Do not increase this MD 28040 from 25 kByte (default
setting) to 35–50 kByte unless you need more than
2048 bytes in MD 18242.
Check the free DRAM against MD18050. Values greater than 15000 must be
displayed. If the value is smaller, the memory resources are exhausted and
there is a risk that user data will be lost if DRAM continues to be allocated.
6.7.2 Static RAM
Set the following machine data:
Table 6-12 MD for SRAM breakdown
MDs for SRAM Meaning
MD 18120: MM_NUM_GUD_NAMES_NCK Number of global user variables
MD 18130: MM_NUM_GUD_NAMES_CHAN Number of channel-specific global user variables
MD 18080: MM_TOOL_MANAGEMENT_MASK Memory breakdown for tool managementSet the tool mana-
gement to suit the requirements of the machine. If you are
not using the TM function, set MD 18084 and 18086 to “0”
to free more memory for part programs.
MD 18082: MM_NUM_TOOL Number of tools according to machine
MD 18100: MM_NUM_CUTTING_EDGES_IN_TOA Number of tool cutting edges per TOA module according to
requirements of end customer
MD 18160: MM_NUM_USER_MACROS Number of macros
MD 18190: MM_NUM_PROTECT_AREA
MD 28200: MM_NUM_PROTECT_AREA_CHAN
MD 28210: MM_NUM_PROTECT_AREA_ACTIV
Number of files for machine-related protection areas
Number of files for channel-specific protection areas
Number of protected areas on a channel that are active at
the same time
MD 28050: MM_NUM_R–PARAM Number of R parameters required
MD 28080: MM_NUM_USER_FRAMES Number of frames required
MD 38000: MM_ENC_COMP_MAX_POINTS Number of compensation points required
Checking the
DRAM