B.3 Ram Address Assignment - Siemens SIMATIC S5-90U System Manual

Technical Specifications, DB1 Parameters, RAM Address Assignment
B.3 RAM Address Assignment
B.3.1 RAM Address Assignment in the S5-90U
Address RAM in the S5-90U
0000
H
.
Internal data
.
CFFF
H
D000
H
.
Program memory
.
DFFF
H
E000
H
.
Internal data
.
E9FF
H
EA00
H
.
System data*
.
EBFF
H
EC00
T0
H
.
Timers T
.
EC3F T31
H
EC40
H
.
Internal data
.
ECFF
H
ED00
C0
H
.
Counters C (retentive)
.
ED0F C7
H
ED10
C8
H
.
Counters C (non-retentive)
.
ED3F C31
H
ED40
H
.
Internal data
.
EDFF
H
EE00
FY0
H
.
Flags F (retentive)
.
EE3F FY63
H
EE40
FY64
H
.
Flags F (non-retentive)
.
EE7F FY127
H
EE80
H
.
Internal data
.
EEFF
H
*
For detailed list see following table
B-8
Address RAM in the S5-90U
EF00
IB0
H
.
Digital PII (external I/Os)
.
EF1F IB31
H
EF20
IB32
H
.
Digital PII (onboard I/Os)
.
EF25 IB37
H
EF26
H
.
Internal data
.
EF3F
H
EF40
IB64
H
.
Digital PII (external I/Os)
.
EF7F IB127
H
EF80
QB0
H
.
Digital PIQ (external I/Os)
.
EF9F QB31
H
EFA0
QB32
H
.
Digital PIQ (onboard I/Os )
.
EFA1 QB33
H
EFA2
H
.
Internal data
.
EFBF
H
EFC0
QB64
H
.
Analog PIQ (external I/Os)
.
EFFF QB127
H
F000
H
.
Internal data
.
FC7F
H
S5-90U/S5-95U
EWA 4NEB 812 6115-02b