Info - Siemens CPU 948 Programming Manual

PG Functions
11.2.1

Info

Memory configuration
P L C i n f o
Module Submod
0 1
1 1
1 2
1 3
2 1
2 2
2 3
F1 F2
OUTP ADDR MEM CONF
1) corresponds to the memory configuration of the CPU 948-1: 320 Kw = 640 Kbytes
Fig. 11-1 PG display of the memory configuration
11 - 6
The CPU 948 is available with two memory versions and you can
check the memory capacity using the PG function "memory
configuration". With this function, the following information about
the CPU user memory is transferred to the PG (from PG software
version V6.0 upwards with "Delta diskette" for the CPU 948):
• • memory capacity (640 Kbytes/1664 Kbytes)
• • longest free block of user memory
• • sum of all free blocks of user memory.
The PG software V6.3 with "Delta diskette" for the CPU 948 displays
the memory configuration exactly.
With older PG software versions (e.g. V3.0 or MT1.0) the memory
configuration is as for the CPU 946/947 (refer to Fig. 11-1). The total
memory configuration of the CPU 948 must then be calculated from
the total of the submodule values.
M e m o r y configuration
Type Start address
RAM 00000
RAM 10000
30000
RAM
Submod. empty / not plugged in
Submod. empty / not plugged in
Submod. empty / not plugged in
Submod. empty / not plugged in
Longest free block of RAM
Sum of all free blocks of RAM
F3
F4
SYSPAR BSTACK
S 5 1 5 5 U
End address
0FFFF
2FFFF
4FFFF
: 314800 Words
: 315664 Words
F5 F6
ISTACK
SIMATIC S5 / OES0C
Length
64 KW
1)
128 KW
128 KW
F7 F8
RETURN
CPU 948 Programming Guide
C79000-G8576-C848-04