Bytes Y+4 To Y+7 For A Diagnostic Interrupt (Operating Status Change By Intelligent Slave) - Siemens S7-300 Installation Manual

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When a process interrupt occurs (code 02
bytes of interrupt information after byte y+4 are transferred. These 4 bytes are
transferred to the intelligent slave using SFC 7 "DP_PRAL" when the process
interrupt for the master is generated.
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Byte y+1 contains the code for a diagnostic interrupt (01
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).
Byte y + 4
Byte y + 5
Byte y + 6
Byte y + 7
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)

11-28
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 0 0 0
0: Module o.k.
1: Module fault
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 1 0 1 1
Identifier for the intermediate
memory address area
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 0 0 0
0: Operating mode RUN
1: Operating mode STOP
7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 0 0 0 0
S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
for process interrupt in byte y+1), 4
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). The diagnostic data
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A5E00203919-01