Siemens CPU 312, Руководство по аппаратному обеспечению и установке

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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
11-28
A5E00105492-03
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When a process interrupt occurs (code 02
H
for process interrupt in byte y+1), 4
bytes of interrupt information after byte y+4 are transferred. These 4 bytes were
transferred to the intelligent slave using SFC 7 "DP_PRAL“ or SFC 75 "SALRM“
when the process interrupt for the master was generated.
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Byte y+1 contains the code for a diagnostic interrupt (01
H
). The diagnostic data
contains the 16 bytes of status information from the CPU. The figure below shows
the allocation of the first four bytes of diagnostic data. The next 12 bytes are
always 0.
The data in these bytes corresponds to the contents of data record 0 of diagnostic
data in 67(3 (in this case, not all bits are used).
0: Operating mode RUN
1: Operating mode STOP
Identifier for the intermediate
memory address area
Byte y + 7
0: Module o.k.
1: Module fault
Byte y + 6
Byte y + 5
Byte y + 4
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 0 0 0
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 1 0 1 1
0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
7 6 5 4 3 2 1 0 Bit No.
7 6 5 4 3 2 1 0 Bit No.
Note: byte y + 8 to byte y + 19 are always 0.
Figure 11-10 Bytes y+4 to y+7 for a diagnostic interrupt (operating status change by intelligent slave)