Siemens SINUMERIK 808D

An LUD data block is needed for each of these programs. The size of the reserved memory
is affected by the number of LUDs per NC program and their individual memory
requirements. The LUD data blocks are stored in the dynamic memory.
28020 MM_NUM_LUD_NAMES_TOTAL C02 V2, K1
- Number of local user variables (DRAM) DWORD PowerOn
-
- - 1000, 1000, 1000,
1000, 1000, 1000,
1000, 1000...
1000 32000 1/1 M
Description: Defines the number of variables for the local user data (LUD) which are permitted to
exist in the active sections of the program. Approximately 150 bytes of memory per
variable are reserved for the names of the variables and the variable values. The
memory required for the variable value is equal to the size of the data type. If the
total of the local user variables from the active main program and the related
subprograms is larger than the defined limit, the variables which are over the limit
are not accepted during execution of the program. Dynamic memory is used for the
variable names and variable values.
Overview of the memory used by the data types:
Data type Memory used
REAL 8 bytes
INT 4 bytes
BOOL 1 byte
CHAR 1 byte
STRING 1 byte per character, 200 characters per string are possible
AXIS 4 bytes
FRAME 400 bytes
28040 MM_LUD_VALUES_MEM C02 V2, K1
- Memory space for local user variables (DRAM) DWORD PowerOn
-
- - 125, 125, 125, 125,
125, 125, 125, 125...
125 32000 1/1 M
Description: This MD defines the amount of memory space available for LUD variables.
The maximum number of available LUDs is given by one of the limit values of MD28020
$MC_MM_NUM_LUD_NAMES_TOTAL or MD28040 $MC_MM_LUD_VALUES_MEM.
Related to:
MD28020 $MC_MM_NUM_LUD_NAMES_TOTAL
(number of local user variables (DRAM))
28050 MM_NUM_R_PARAM C02 K1
- Number of channel-specific R variables (SRAM) DWORD PowerOn
-
- - 300 0 32535 ReadOnly S
Description: Defines the number of R variables available in the channel. This machine data reserves
8 bytes of buffered user memory per R variable.
28070 MM_NUM_BLOCKS_IN_PREP EXP, C02 B1, K1
- Number of blocks for block preparation (DRAM) DWORD PowerOn
-
808d-me42 - 50 50 1000 0/0 S
808d-me62 - 80 50 1000 1/1 M
Machine data
3.3 Channel-specific machine data
Parameter Manual
210 List Manual, 01/2017