Diagnostics (Namur Ne 107) - Genesis ED1 Installation And Operating Manual

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2.3.1 Diagnostics (Namur NE 107)

The Genesis includes an exhaustive list of Diagnostic
Indicators which follow the NAMUR NE 107 guidelines.
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NAMUR is an international user association of automation
technology in process industries, whose goal is to promote
the interest of the process industry by pooling experiences
among its member companies. In doing so, this group
promotes international standards for devices, systems, and
technologies.
The objective of NAMUR NE 107 was essentially to make
maintenance more efficient by standardizing diagnostics
information from field devices. This was initially integrated
via F
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of the communication protocol.
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According to the NAMUR NE107 recommendation, "Self
Monitoring and Diagnosis of Field Devices," fieldbus diag-
nostic results should be reliable and viewed in the context of
a given application. The document recommends categorizing
internal diagnostics into four standard status signals:
• Failure
• Function Check
• Out of Specification
• Maintenance required
These categories are shown by both symbols and colors,
depending on the display capability.
In essence, this approach ensures that the right diagnostic
information is available to the right person-at the right
time. In addition, it allows diagnostics to be applied, as
most appropriate, for a particular plant application (such as
process control engineering or asset management mainte-
nance). Customer specific mapping of diagnostics to these
categories allows for flexible configuration depending on the
user's requirements.
From an external perspective, diagnostic information
includes measurement of process conditions, in addition to
detection of internal device or system anomalies.
As mentioned above, the indicators can be assignable (via
the DTM or host system) by the user to any (or none) of
the NAMUR recommended Status Signal categories:
Failure, Function Check, Out of Specification, and
Maintenance Required.
fieldbus, but the concept applies regardless
63-601 Genesis Models ED1 & ED2 Multiphase Detector