Triggering Of A Diagnostic Interrupt; Triggering Of A Hardware Interrupt - Siemens SIMATIC ET 200MP Manual

Interface module im 155-5 pn ba

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Interrupts and diagnostic, error, and system alarms

4.2 Interrupts

4.2.1

Triggering of a diagnostic interrupt

For an incoming or outgoing event (e.g., wire break on a channel of an I/O module), the

module triggers a diagnostic interrupt if this is configured accordingly in STEP 7 (TIA Portal).

The CPU interrupts user program execution and executes the diagnostic interrupt OB. The

event that triggered the interrupt is entered in the start information of the diagnostic interrupt

OB.

4.2.2

When a hardware interrupt occurs, the CPU interrupts execution of the user program and

processes the hardware interrupt OB. The event that triggered the interrupt is entered in the

start information of the hardware interrupt OB.

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.

Interface module IM 155-5 PN BA (6ES7155-5AA00-0AA0)

Manual, 02/2017, A5E38017683-AA

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