Siemens CPU 948 Programming Manual page 347

Simatic s5 s5-155u
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System data words
RS 16 to RS 47
RS 16
CPU 948 Programming Guide
C79000-G8576-C848-04
Error areas
RS xx
Address(es)
RS 16
E F010
RS 17 to
E F011 to
RS 23
E F017
RS 24 to
E F018 to
RS 31
E F01F
RS 32 to
E F020 to
RS 47
E F02F
Address: E F010H
Table 8-8
Bits of RS 16 (error area output bytes 0 to 15)
Bit no.
Assignment
15
Output byte 0
14
Output byte 1
13
Output byte 2
12
Output byte 3
11
Output byte 4
10
Output byte 5
9
Output byte 6
8
Output byte 7
7
Output byte 8
6
Output byte 9
5
Output byte 10
4
Output byte 11
3
Output byte 12
2
Output byte 13
1
Output byte 14
0
Output byte 15
If errors appear during update of the process image input/output tables
or interprocessor communication flags, the corresponding bits are set
to '1'. – The system data words RS 17 to 47 are structured analogous
to RS 16.
Bit Assignment of the System Data Words
Error area
Output bytes 0 to 15
Output bytes 16 to 127
Input bytes 0 to 127
Interprocessor communication flag
bytes 0 to 255
High byte
Low byte
8 - 23

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