8.3.10 Interrupts
Definition
The interrupt section of the slave diagnostic information contains information about the
interrupt type and the cause of the interrupt that triggered the slave diagnostic information.
The interrupt section consists of a maximum of 29 bytes. A maximum of 1 interrupt can be
signaled per slave diagnostic information.
Position in the diagnostic frame
The position of the interrupt section in the slave diagnostic data depends on the number of
channel-related diagnostics. The interrupt section is always the last section in the diagnostic
frame
Contents
The content of the interrupt information depends on the interrupt type:
For diagnostic interrupts, the diagnostic data record 1 for SIMATIC S7 (e.g. 16 bytes) is sent as
additional interrupt information (starting from byte x+4). For digital and analog modules, you
can find the meaning of these bytes in the figures below.
For hardware interrupts, the length of the additional interrupt information is 4 bytes. The
meaning of these bytes can be found in the following figures. For end of cycle interrupts, these
bytes are always FF
H
.
For plug/pull interrupts the length of the additional interrupt information is 5 bytes. The meaning
of these bytes can be found in the following figures.
Plug/pull interrupt, module replacement in runtime
The ET 200PA SMART is configured with active bus elements. By activating the “Module
replacement in runtime” parameter, you enable the signaling of plug/pull module events of the
IM 650 via plug/pull interrupts.
If you disable “Module replacement in runtime”, these events are only mapped onto the
identifier-related diagnostics and the module status.
Diagnostic interrupt
If there is a diagnostic event for channel/channel group 0 of a module, there may also be a
module fault in addition to a channel fault. In this case, the entry is generated even if you have
not enabled the specific channel diagnostics for channel/channel 0 of the module.
Structure of the interrupt section
The interrupt section of the ET 200PA SMART is structured as follows:
The bytes x to x+3 inform you of the interrupt type.
Interrupt, error and system messages
8.3 S7 diagnostics
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 105
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