Interrupts - Siemens SIMATIC ET 200SP Manual

Interrupts, error messages, diagnostics and system alarms

5.2 Interrupts

5.2 Interrupts
Introduction
The I/O device generates interrupts as a reaction to specific error events. Interrupts are
evaluated based on the I/O controller used.
Evaluating interrupts with I/O controllers
The ET 200SP distributed I/O system supports the following interrupts:
• Diagnostics interrupts
• Hardware interrupts
• Pull/plug interrupts
• Maintenance events
In the event of an interrupt, interrupt OBs are automatically called in the CPU of the IO
controller.
Information on the cause and class of the error is already available, based on the OB number
and start information.
Detailed information on the error event can be obtained in the error OB using the instruction
"RALRM" (read additional interrupt information).
System diagnostics
In STEP 7 (TIA Portal), the innovated system diagnostics is available for the devices of the S7-
1500 automation system (IO controller S7-1500 CPU) and ET 200SP (IO device). Independent
of the cyclic user program, alarms are made available on the display of the S7-1500 CPU, the
CPU web server and the HMI device.
You will find more information on system diagnostics in the Diagnostics
(https://support.industry.siemens.com/cs/ww/en/view/59192926) function manual.
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Interface Module IM 155-6 PN R1 (6ES7155-6AU00-0HM0)
Equipment Manual, 11/2022, A5E51160307-AA