P3: Basic PLC Program for SINUMERIK 840D sl
13.11 Memory requirements of the basic PLC program
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
911
Example:
Based on the memory requirements in the table above, the memory requirements have been determined for two
sample configurations (see table below).
Compile cycles
DB 9 Interface
PLC compile cycles
Is generated by BP as a function of NC option 436
Block
type no.
Function Remark
Block size (bytes)
Working
memory
Minimum configuration (1 spindle, 2 axes and T MCP)
see above Basic program, base 54688
Interface DBs 1612
MCP 92
Total 56392
Block
type no.
Function Remark
Block size (bytes)
Working
memory
Maximum configuration (2 channels, 4 spindles, 4 axes, T MCP)
see above Basic program, base 54688
see above Interface DBs 2768
see above MCP 92
see above Error/operating
messages
66
see above ASUBs 1 ASUB initiation 128
see above Concurrent axis For 2 turrets 132
see above PLC/NC communication 1 x read variable and 1 x write variable 838
see above Tool management 2 turrets with one loading point each 674
see above Compile cycles 436
Total 59822
Basic program options
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