TR-Electronic 65 Serie Montageanleitung Seite 170

Troubleshooting and diagnosis options
7 Troubleshooting and diagnosis options
7.1 Optical displays
If all 4 LEDS are in the flashing mode (simultaneous fast flashing), an exception error
exists. In this case you can try to execute a re-start to put the measuring system into
operation again. If this doesn't work, the device must be replaced.
7.2 PROFINET Diagnostic alarm
PROFINET supports an integrated diagnostic concept, which enables efficient error
detection and elimination. When an error occurs, the defective IO device transmits a
diagnostic alarm to the IO controller. This alarm calls up a corresponding program
routine in the controller program, in order to react to the error.
Alternatively, the diagnostic information can also be manually acyclically read out
directly from the IO device via the corresponding record index and displayed on an
IO supervisor, see chapter "Diagnostics via Record Data" on page 129.
Alarms belong to the acyclic frames which are transmitted via the RT channel. They
are also identified by Ether type = 0x8892. Depending on internal conditions, in
the event of an alarm the data status can be set also to BAD = invalid, see chapter
"Data status" on page 124.
Errors and warnings are transmitted by the measuring system to the IO controller in
the form of a so-called Alarm Notification Request (alarm message). For
identification purposes the alarm message contains the type of alarm (diagnosis,
process), the API (Application Process Identifier), the addressing information (slot,
subslot, module ID, submodule ID) and the channel-related diagnosis (channel no.,
channel type and error type) or, instead of this, a manufacturer-specific diagnosis with
transmission of an error code and depending of the device additionally a status value.
The exact structure of the Alarm Notification Request can be found e.g. in the
PROFINET specification Application Layer protocol for decentralized periphery and
distributed automation, order no.: 2.722.
An error is transmitted via the alarm channel with Frame-ID = 0xFC01 "PROFINET
IO Alarm high" and warnings with Frame-ID = 0xFE01 "PROFINET IO Alarm low".
Depending on the device type, channel-specific and/or manufacturer-specific alarms
are supported by the measuring system.
In the Alarm Notification Request, the type of alarm is displayed via the
attribute UserStructureIdentifier.
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04/25/2022