Siemens SINUMERIK 840D sl Function Manual page 620

TE7: Continue machining - retrace support
15.3 Startup
For RESU, the already existing machine data value (x) is adjusted as follows:
MD28090 $MC_MM_NUM_CC_BLOCK_ELEMENTS = x + 4
Size of the block memory
The size of the block memory in KB that can be used by the user for compile cycles is defined
via the memory configuring channel-specific machine data:
MD28100 $MC_MM_NUM_CC_BLOCK_USER_MEM
For RESU, the already existing machine data value (x) is adjusted as follows:
MD28100 $MC_MM_NUM_CC_BLOCK_USER_MEM = x + 20
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions