Siemens SIMATIC ET 200AL Equipment Manual page 29

Interrupts, error messages, diagnostics and system alarms
5.2 Interrupts
Contents
The contents of the interrupt information depend on the interrupt type:
• In the case of diagnostics interrupts, diagnostics data record 1 (up to 58 bytes) is sent as
interrupt status information (starting from byte x+4).
• The length of the interrupt status information for hardware interrupts is 4 bytes.
Structure of interrupts
The figure below shows the structure of the interrupt section for the ET 200AL distributed I/O
system.
Figure 5-4
28
Structure of the interrupt status of the interrupt section
IM 157-1 DP (6ES7157-1AA00-0AB0)
Equipment Manual, 08/2021, A5E32100641-AE