Siemens CPU 948 Programming Manual page 521

Simatic s5 s5-155u
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ANZW
CPU 948 Programming Guide
C79000-G8576-C848-04
Note
The RT area is reset during an OVERALL RESET.
If you use the PG functions via the S5 bus, the RT area is
occupied as described above and is then no longer available for
other programs (e.g. standard FBs). You should bear this in mind
when planning your system.
ANZW contains the current status of the send and receive blocks. The
individual bits of an ANZW have the following significance:
Bit no.
Assignment
15
14
13
Not used
12
11
10
9
8
7
Not used
6
Data acceptance complete
5
Data transfer complete
4
1: error
3
Job complete with error
2
Job complete without error
1
0: SEND enabled
1: SEND disabled
0
0: RECEIVE disabled
1: RECEIVE enabled
1)
Specifically for PG functions via the S5 bus
PG Functions via the S5 Bus
High byte
Low byte
1)
1)
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