Pepperl+Fuchs HD2-DM-A Manual page 14

Advanced Diagnostics
General Description
• PROFIBUS Power Hub integration for systems that use the transparent Pepperl+Fuchs
Segment Couplers. This integration is described in detail in the PROFIBUS Power Hub
manual.
• Simple integrations can be implemented using a volt-free contact. Typically, this integra-
tion will be used with one of the other solutions. Alarming during segment operation is
done using the volt-free contact; commissioning and troubleshooting are done using one
of the other integration methods. For more information, see chapter 4.4.
2.2 General Terms and Functions for Advanced Diagnostics
Overview
Each segment monitored by advanced diagnostics (AD) has 1 of 3 states:
• Non-commissioned
This is the initial state of segments in the ADM. All diagnostics in this state are based on
the following:
•
•
This mode is used to commission a segment and guarantees an error-free installation.
• Commissioned
A segment is set to commissioned if an initial checkout was executed to verify an error-
free installation. In the commissioned mode, the segment is validated against limits
defined during the commissioning procedure. These limits can be specified manually for
each segment, but typically the commissioning wizard is used. For more information on
the commissioning wizard, see chapter 2.2.2.
• Disabled
The segment is a spare segment and not used yet. The advanced diagnostics is disabled
for this segment.
The overall segment and each single diagnostic value are classified by the ADM in the follow-
ing way:
Not Commissioned
Commissioned
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Limits defined by the fieldbus standard IEC/EN 61158–2 or
Limits calculated from information on the segment topology, e.g., trunk length, type
of device couplers used
Excellent:
All values are within the specification limits with an excellent
safety margin.
Good:
The value is within the specification limits but the safety margin is
reduced. Values within IEC 61158-2 limits, but with small safety
margins or values are not matching with expected values of the
topology.
Out of specification:
The value exceeds the specification limits. At least one value vio-
lated an IEC 61158-2 limit.
No Error:
The value is within the commissioned limits.
Maintenance Required:
The value is outside the commissioned limits (but still inside
allowed range). At least one value changed since commission-
ing.