Siemens S5-100U - RAM Address Assignments

S5-100U Addressing
6.7 RAM Address Assignments
The following table gives an overview of the major addresses in the RAM of the three CPUs (in
hexadecimal code).
Table 6-5. Important Addresses in the RAM
*
Program memory; block address list only in TEST mode.
102*
4000 to 5FFF
EF00 to EF1F
EF40 to EF7F
EF80 to EF9F
EFC0 to EFFF
D000 to DFFF
EC00 to EC39
ED00 to ED0F
ED10 to ED3F
103
EF40 to EF7F
EF80 to EF9F
EFC0 to EFFF
EF00 to EF1F
ED10 to ED3F
8000 to CFFF
0000 to 7FFF
EC00 to ECFF
ED00 to ED0F
100
C000 to DFFF
E400 to E41F
E440 to E47F
E480 to E49F
E4C0 to E4FF
EE00 to FFFF
E280 to E29F
E2A0 to E2AF
E2B0 to E2BF
PII, analog
PII, digital
PIQ, digital
CPU
Memory submodule
Non-retentive counters
PIQ, analog
Retentive counters
Timers
EE00 to EE3F
EE40 to EE7F EE40 to EE7F
EE00 to EE3FE300 to E33F
E340 to E37F
Retentive flags
Non-retentive flags
FC80 to FCFF
FD00 to FEFF
FF00 to FF7F
----
FF80 to FFFF
EA00 to EBFF
DC00 to DDFF
DE00 to DFFF
E000 to E1FF
E200 to E3FF
E400 to E5FF
EA00 to EBFF
E100 to E17F
E080 to E0FF
E180 to E1FF
E200 to E27F
----
EA00 to EBFF
Module address list
OB
FB
PB
DB
SB
System data
Program memory
EWA 4NEB 812 6120-02 6-15