Commissioning and Diagnostics
6-29
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
6.4.9
Interrupts
Definition
The interrupts section of the slave diagnosis provides information on the type of
interrupt and the cause that triggered the interrupt.
The interrupt section has a maximum of 29 bytes.
A maximum of one interrupt can be used per slave diagnosis.
Position in the Diagnostic Frame
The position of the interrupt section in the slave diagnosis depends on the
structure of the diagnostic frame and on the number of channel-specific diagnoses
(see also Figure 6-5 on page 6-18): The interrupt component is always the last part
of the diagnostic frame.
Contents
The contents of the interrupt information depend on the type of interrupt:
In the case of diagnostic interrupts, the diagnostic data record 1 for SIMATIC S7
(e.g. 16 bytes) is sent as interrupt information (as of byte x+4). You can find out
what these bytes mean for digital and analog modules in Figures 6-12 to 6-15
(pages 6-33 to 6-36).
In the case of process interrupts, the additional interrupt information is 4 bytes
long. You can find out what these bytes mean in Figures 6-16 and 6-17 (pages
6-37 and 6-37).
In the case of cycle-end interrupts, these bytes are always FF
H
.
In the case of insertion/removal interrupts the additional interrupt information is
5 bytes long. You can find out what these bytes mean in Figure 6-18 (on page
6-38).
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