Triggering A Hardware Interrupt; Triggering A Swapping Interrupt - Siemens SIMATIC ET 200SP Manual

Interrupts, diagnostics, error, and system messages
5.2 Interrupts
5.2.2

Triggering a hardware interrupt

Triggering a hardware interrupt
If there is a process interrupt, the CPU interrupts user program execution and processes the
process interrupt block OB 40. The result that triggered the interrupt is added to the start
information of the hardware interrupt block.
Note
Diagnostics "Hardware interrupt lost" (from I/O module)
Avoid creating hardware interrupts cyclically.
If the hardware interrupt load is too high, hardware interrupts can get lost depending on the
number of I/O modules and the communication load.
5.2.3

Triggering a swapping interrupt

Triggering a swapping interrupt
If there is a swapping interrupt, the CPU interrupts user program execution and processes
the process interrupt block OB 83. The result that triggered the interrupt is added to the start
information of OB 83.
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IM 155-6 PN ST interface module (6ES7155-6AU00-0BN0)
Manual, 12/2014, A5E03576904-AC