Siemens CPU 948 - Page 441

Assignment list With the assignment list, you specify how many of the existing 48
memory fields are to be assigned to the links.
The list is not changed by the system program. It has the following
structure.
Data word Format Value Significance
DW n + 0
DW n + 1
DW n + 2
DW n + 3
KS
KY
KY
KY
S1
2 , a
3 , b
4 , c
Transmitter = CPU 1
Receiver = CPU 2
Receiver = CPU 3
Receiver = CPU 4
DW n + 4
DW n + 5
DW n + 6
DW n + 7
KS
KY
KY
KY
S2
1 , d
3 , e
4 , f
Transmitter = CPU 2
Receiver = CPU 1
Receiver = CPU 3
Receiver = CPU 4
DW n + 8
DW n + 9
DW n + 10
DW n + 11
KS
KY
KY
KY
S3
1 , g
2 , h
4 , i
Transmitter = CPU 3
Receiver = CPU 1
Receiver = CPU 2
Receiver = CPU 4
DW n + 12
DW n + 13
DW n + 14
DW n + 15
KS
KY
KY
KY
S4
1 , k
2 , l
3 , m
Transmitter = CPU 4
Receiver = CPU 1
Receiver = CPU 2
Receiver = CPU 3
Instead of the lower case letters a to m (in bold face) numbers between 0
and 48 must be inserted depending on the number of assigned memory
fields. The sum of these numbers must not exceed 48.
Note
You must keep to the structure shown in table 10-7 even if you have
less than four CPUs.
Table 10-7 Assignment list for OB 200 (initialize)
INITIALIZE Function (OB 200)
CPU 948 Programming Guide
C79000-G8576-C848-04
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