Siemens SINUMERIK Commissioning Manual page 111

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Bits 16 to 31: MCS
3.2.8 Memory for cycles in the DRAM
Overview
Cycles can be stored in the DRAM of the NCU. This makes more SRAM memory available
to the user for parts programs and workpieces.
Function
Under "Start-up" → "NC" → "NC Memory", the user interface for HMI-Advanced offers users
with corresponding access authorizations the possibility of determining the utilization of
DRAM and to adjust its size via MD 18351: MM_DRAM_FILE_MEM_SIZE. A change to the
DRAM memory causes a complete reorganization of the NCK memory.
NOTICE
You must save all relevant data before changing the memory sizes. If machine data is
changed then this results in a re-organization of the NCK memory.
Cycles saved in the DRAM
Via MD 11290: DRAM_FILESYSTEM_MASK can be used to set which objects should be
loaded in the DRAM:
Bit 0-n
Bit 0
Bit 1
Bit 2
HMI Advanced (IM4)
Commissioning Manual, 03/2009, 6FC5397-0DP10-3BA0
DISPLAY_AXIS
Bit 16 = 1 Display machine axis in actual-value windows
= 0 Hide the machine axis in the actual-value windows.
Bit 17 Not assigned
Bit 18 = 1 Display machine axis in the base offset window
= 0 Hide machine axis in base offset window
Bit 19 = 1 Display machine axis in the handwheel selection window
= 0 Hide machine axis in the handwheel selection window
= 0: The data for the specified directory is to be stored in the SRAM.
= 1: The data for the specified directory is to be stored in the DRAM.
Depending on MD 11291: DRAM_FILESYST_SAVE_MASK a copy is
kept in the FFS on the NC card.
CST directory (Siemens cycles)
CMA directory (machine manufacturer cycles)
CUS directory (user cycles)
Parameterizing machine data
3.2 Parameterizing the control using machine data
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