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Addressing
The following table is a sequential listing of important system data.
Table 6-6. Address Assignment in the System Data Area of the S5-95F
System data word
8 - 12
33
34
35
37
40 - 47
128 - 159
203 - 214
Warning
!
The above system data should only be used by persons familiar with the system. All
non-specified system data are used by the operating system and should in no case be
used by you. Improper use of the system data may result in malfunctioning of the S5-
95F and can thus impair the system's failsafety.
6-18
Address
(hex.)
5D10
:
5D19
5D42
5D43
(First free memory location in the internal RAM)
5D44
(First free memory location in the internal RAM)
5D45
5D46
5D47
5D4A
End address for STEP 5 blocks in the internal RAM
5D4B
5D50
5D5F
5E00
5E3F
5E96
5EAD
Meaning
Integral real time clock
clock data area, status word,
error messages, compensation value
Level indicator for STEP 5 blocks
Level indicator for assembler blocks
Start address for STEP 5 blocks
in the internal RAM
CPU version/software version
Block stack
Interrupt stack
S5-95F
EWA 4NEB 812 6210-02
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