Interrupts - Siemens SIMATIC ET 200MP Manual

5.2

Interrupts

Digital input module DI 16x24VDC HF supports diagnostic and hardware interrupts.
Diagnostic interrupt
The module generates a diagnostic interrupt at the following events:
● Missing supply voltage L+
● Wire break
Hardware interrupt
The module generates a hardware interrupt at the following events:
● Positive edge
● Negative edge
● Positive and negative edge
For detailed information on the error event, refer to the hardware interrupt organization block
with the "RALRM" instruction (read additional interrupt information) and to the STEP 7 online
help.
DI 16x24VDC HF Digital Input Module (6ES7521-1BH00-0AB0)
Manual, 01/2013, A5E03485952-01
Interrupts/diagnostic alarms
5.2 Interrupts
19