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AS-Interface Analyser
5.6.3
Safety Data
For all 2 channel safety-related slaves according to "Safety at Work" the tab "Safe-
ty Data" indicates, whether the slave has "released" or it is "free".
Two details:
• The representation of the safety data is only valid for a moment – as for all I/O
data – , i.e. it is updated approx. in a 1 second rhythm. Safety slaves, which have
to be reset externally after they have been released, keep on sending the re-
leased signal. The information "Released" persists.
• In this representation only 2-channel slaves in which both channels switch on or
off, are interpreted. If only 1-channel of a 2-channel slave has been switched off
that cannot be represented here correctly. However, the situation can be evalu-
ated in the safety monitor of the trace mode (see chapter 5.7.9).
Fig 10: The status is indicated for 1-channel, safety related slaves.
5.7
Trace Mode (Expert Mode)
In the "Trace Mode" the analyser notes each particular telegram or those which
are selected after triggers and filters. They are loaded into an attached notebook
and analyzed there. The analysis requires some detail knowledge of the function
of AS-Interface, but it is a very powerful tool for the analysis of a facility. Therefore,
the mode is called "Expert Mode".
The trace mode is unjustifiably regarded as something complicated. This software
supports the user and prevents faulty operation largely. If you have sufficient
knowledge of AS-Interface, to interpret a trace you can create it in a few steps by
yourself:
In order to trace you specify,
• when you want to begin and let end a trace (starting mask),
• whether you want to use different trigger options (trigger mask),
Subject to reasonable modifications due to technical advances.
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Functions of the Analyser
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