Technical data

Example
It is assumed that the data blocks DB3 and DB4 are defined in the user
memory. No DB should yet be present in the DB-RAM other than DB0. The
following table shows the memory configuration after calling OB 255
several times with the parameters listed in the table.
Order
of
call
Function ACCU -1- DB in memory after call
-H-H -H-L -L-H -L-L User mem. DB-RAM
1Shift no
sig-
nifi-
cance
0no
sig-
nifi-
cance
3 DB 4 DB 3
2 Duplicate 5 4 DB 4 DB 3,5
3 Duplicate 6 5 DB 4 DB 3,5,6
4 Shift 0 4 no DB DB 3,4,5,6
6
OB 254, OB 255: Transferring a Data Block to the DB RAM
CPU 928B Programming Guide
C79000-B8576-C898-01
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