Siemens CPU 948 - Page 367

System parameters System parameters in the memory area beginning with the address
E 8210H:
Word
0 Start add. interface module input E 8210H
1 Start add. interface module output E 8211H
2 Start add. process image input table E 8212H
3 Start add. process image output table E 8213H
4 Start add. flags E 8214H
5 Start add. timers E 8215H
6 Start add. counters E 8216H
7 Start add. system data E 8217H
8 Status ID PLC software version E 8218H
9 User memory end address E 8219H
10 System program memory E 821AH
11 Length of DB list E 821BH
12 Length of SB list E 821CH
13 Length of PB list E 821DH
14 Length of FB list E 821EH
15 Length of OB list E 821FH
16 Length of FX list E 8220H
17 Length of DX list E 8221H
18 Length of DB address list (DB 0) E 8222H
19 Slot ID (see below) CPU ID 2 (see below) E 8223H
20 Block header length E 8224H
21 CPU ID 1 (see below) Programmer interface
software version
E 8225H
You can also use the SYSTEM PARAMETER PG online function to
find the information contained in a few system data registers (e.g.,
concerning the internal structure of the CPU, the software version, the
CPU ID).
Addressable System Data Area
CPU 948 Programming Guide
C79000-G8576-C848-04
8 - 43