Maintenance Events; Hardware Interrupts - Siemens 6ES7141-6BG00-0BB0 Equipment Manual

PROFINET IO
4.2 Interrupts/diagnostics alarms
4.2.3.2

Maintenance events

Triggering of a maintenance event
The MultiFieldbus interfaces of the ET 200eco PN M12-L support the diagnostics concept and
maintenance concept in PROFINET according to the IEC 61158-6-10 standard. The goal is to
detect and remove potential problems as soon as possible.
The I/O device signals a maintenance event to the higher-level diagnostic system on the
following event:
Table 4-7 Triggering of a maintenance event
Maintenance alarm
Maintenance demanded
MT/IO LED is lit
System alarms in STEP 7
The maintenance information is generated in STEP 7 with the following system alarms:
• Maintenance demanded - indicated for each port by a yellow wrench icon
view or in the hardware configuration.
You can find additional information in the STEP 7 online help.
4.2.3.3

Hardware interrupts

During a hardware interrupt, the CPU interrupts processing of the user program and
processes the hardware interrupt organization block.
For detailed information on the event, refer to the hardware interrupt organization block with
the "RALRM" instruction (read additional interrupt info) and to the STEP 7 online help.
The information on which channel of the I/O device triggered the hardware interrupt is
entered in the start information of the organization block. The figure below shows the
assignment to the bits of the local data double word 8.
Figure 4-5 Start information of the organization block
34
Error code Event
2 Undervoltage
H
I/O device digital inputs DI 8x24VDC M12-L 8xM12 (6ES7141-6BG00-0BB0)
Meaning
Supply voltage 1L+ is below the tolerance limit.
Equipment Manual, 03/2023, A5E46570417-AD
in the device