Interrupts - Siemens SIMATIC ET 200eco PN M12-L Equipment Manual

PROFINET IO
5.2 Interrupts/diagnostics alarms
5.2.2

Interrupts

Interrupts
The IO-Link Master CM 8xIO-Link + DIQ 8x24VDC M12-L supports the following interrupts:
• Diagnostics interrupts
• Hardware interrupts
• Pull/plug interrupt (at submodule port)
In case of an alarm, the CPU of the IO controller automatically calls the interrupt OBs.
Information on the cause and class of the error is 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).
Diagnostics interrupts
All IO-Link events of the type Error or Warning are mapped to the diagnostic interrupts of the
assigned submodule. If you have parameterized the IO-Link master accordingly, it triggers a
diagnostic interrupt for an incoming or outgoing event (alarm).
The coding of the events corresponds to the PROFINET standard of the extended channel
diagnostics (USI=0x8002).
The CPU interrupts user program execution and processes the diagnostics interrupt OB
(OB 82). You can determine the error events (channel diagnostics) with the "RALRM"
instruction.
Hardware interrupts
All IO-Link events of the type Notification generated by the IO-Link device are mapped to the
hardware interrupts of the assigned submodule.
The coding of the additional alarm information to the PROFINET standard
"ProcessAlarmReason" (USI = 0x8320).
When a hardware interrupt occurs, the CPU interrupts execution of the user program and
processes the hardware interrupt OB (for example OB 40). You can determine the events
(ProcessAlarmReason) with the "RALRM" instruction.
Pull/plug interrupts
If you remove an IO-Link device or the IO-Link communication is interrupted, a pull alarm is
generated by the assigned submodule.
As soon as you plug the IO-Link device back in or the IO-Link communication is re-established,
a plug alarm is generated.
When an insert/remove module interrupt occurs, the CPU interrupts execution of the user
program and processes the insert/remove module interrupt OB (OB 83). The event that
triggered the interrupt is set in the start information of the insert/remove OB.
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CM 8x IO-Link + DIQ 8x24VDC M12-L 8xM12 (6ES7148-6JJ00-0BB0) communications module
Equipment Manual, 12/2022, A5E51718265-AB