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PROFINET Proxy SPP2000
Equipment Manual, 03/2022, L1V30814715D-01
65
Alarm, error, and system messages
7
7.1
Description of the alarms on the SPP2000
The SPP2000 is designed as a diagnostics-capable IO device. It detects internal and external
faults and reports them to the IO controller as diagnostics, maintenance, or hardware
interrupts. These can be evaluated, for example, in TIA using the alarm OBs.
You can obtain detailed information on the error event when an alarm occurs, e.g. using the
SFB54 (RALRM) in the corresponding alarm OB.
The failure or establishment of communication between SPP2000 and the lower-level PACs is
signaled to the controller as an insert/remove module interrupt.
The alarms of the SPP2000 are implemented as diagnostics or hardware interrupts with
channel information.
Structure of the alarms
Structure of the insert/remove module interrupt
The basic structure of the insert/remove module interrupt with the individual data blocks is
described below.
Table 7- 1
Insert/remove module interrupt
Alarm
Length
BlockType
2 bytes
BlockLength
2 bytes
BlockVersion
2 bytes
AlarmType
2 bytes
API
4 bytes
SlotNumber
2 bytes
SubSlotNumber
2 bytes
ModuleIdentNumber
4 bytes
SubmoduleIdentNumber
4 bytes
AlarmSpecifier
2 bytes
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