Diagnostics and troubleshooting
108
AMS 348
i
SSI
Leuze electronic GmbH + Co. KG
11
Diagnostics and troubleshooting
For the PROFINET, there are two different options for diagnosis.
Event-related diagnosis
PROFINET transmits events within an automation process as alarms that must be acknowl
-
edged by the application process.
The following events are possible:
• Process alarms: Events that originate from the process and are reported to the control.
• Diagnostic alarms: Events that indicate the malfunctioning of an IO device.
• Maintenance alarms: Transmission of information to avoid the failure of a device
through preventative maintenance work.
• Manufacturer-specific diagnostics
To identify the alarms uniquely, they are always reported via a slot/subslot. The user can
prioritize diagnostic and process alarms differently.
State-related diagnosis
In addition, all alarms are also entered into the diagnostics buffer. This can be read out by a
superior instance via acyclic read services.
A further option to report malfunctioning or status changes in a field device to a plant control
is to enter low-priority diagnostic or status messages into the diagnostic buffer only instead
of actively reporting them to the primary control.
This option can also be used for preventive maintenance or for low-priority warnings, for
example.
The AMS 348
i
uses the event-related diagnostics for high-priority events/errors and the state-
related diagnosis for preventive maintenance and the signaling of low-priority events or warn
-
ings.
The following alarms and diagnostics messages are supported:
Table 11.1:
AMS 348
i
alarm and diagnostic messages
Diagnosis
Description
AMS 348
i
category
API/
Slot/
Subslot
Type
Coming/
going
Comment
Parameter error Error in the module
configuration.
Error
0/n
1)
/0
1) n = module number
Diagnos
-
tics alarm
2)
2) Only diagnostics or process alarms actually trigger the transmission of an alarm. All other
types (preventive maintenance and status messages) only lead to an entry into the diag
-
nostics buffer and are thus part of the state-based diagnostics.
Coming
only
Configuration
error
Error in the configura
-
tion of a module.
Error
0/n/0
Diagnos
-
tics alarm
Coming
only
