Interrupts - Siemens SIMATIC ET 200SP Manual

Interrupts/diagnostics alarms

5.2 Interrupts

5.2 Interrupts
Evaluating hardware interrupts with IO controller
The module generates a hardware interrupt at the following events:
● Violation of low limit 1
● Violation of high limit 1
● Violation of low limit 2
● Violation of high limit 2
You can obtain detailed information on the event in the hardware interrupt organization block
with the "RALARM" (read additional interrupt information) instruction and in the STEP 7
online help.
The module channel that triggered the hardware interrupt is entered in the start information
of the organization block. The following figure shows the assignment to the bits of double
word 8 in local data.
Figure 5-2
40
OB start information
Analog input module AI 8xRTD/TC 2-wire HF (6ES7134-6JF00-0CA1)
Manual, 09/2018, A5E32942580-AB