Detailed description
2.10 Memory requirements of basic PLC program for 840D
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
81
2.9.4
Assignment: Timers
Timer No.
Meaning
0 - 9
Reserved for Siemens
10 – 127
User area
Note
The actual upper limit of the block number (timer) depends on the active PLC CPU which is
located in the selected NCU. See section "Key data of PLC CPUs for 810D, 840D".
2.10
Memory requirements of basic PLC program for 840D
General
The basic program consists of basic and optional functions. The basic functions include
cyclic signal exchange between the NC and PLC.
The options include, for example, the FCs, which can be used if required.
The table below lists the memory requirements for the basic functions and the options. The
data quoted represent guide values, the actual values depend on the current software
version.
Memory requirements of blocks with SINUMERIK 840D
Block size (bytes)
Block
type no.
Function
Remark
Load
memory
Working
memory
Basic functions in basic program
FB 1, 15, 16, 17,
18
Must be loaded
3616
3052
FC 1, 2, 3, 4, 11,
20
Must be loaded
7208
6608
DB 4, 5, 7, 8, 17,
19
Must be loaded
2490
966
DB 2, 3, 6
Are generated by the BP
992
812
OB 1, 40, 100
Must be loaded
490
282
Total
14796
11720
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...