Siemens SINUMERIK 840Di Function Manual page 986

Detailed description
2.10 Memory requirements of basic PLC program for 810D, 840D
2.9.4 Assignment: Timers
Timer No.
0 - 9
10 – 127
1)
The actual upper limit of the block number (timer) depends on the current PLC CPU. See section
"Key PLC CPU data for 810D, 840D".
2.10 Memory requirements of basic PLC program for 810D, 840D
2.10
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 Function
type no.
Basic functions in basic program
FB 1, 15, 16, 17,
18
FC 1, 2, 3, 4, 11,
20
DB 4, 5, 7, 8, 17,
19
DB 2, 3, 6
OB 1, 40, 100
2-74
Meaning
Reserved for Siemens
User area
1)
Remark
Must be loaded
Must be loaded
Must be loaded
Are generated by the BP
Must be loaded
Total
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Block size (bytes)
Load Working
memory memory
3616 3052
7208 6608
2490 966
992 812
490 282
14796 11720