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AS-Interface Analyser
A backup slave, which is not taken up to communication, is indicated grey as sla-
ve "0". In the nominal condition the slave it is readdressed automatically by the ma-
ster to the address of the old slave. 4 conditions must be fulfilled for this:
• The previous slave must be removed,
• The slave "0" must have the same profile like the previous slave,
• The master must work in the protected operating mode,
• The option "auto addressing" must be enabled in the master.
If all these conditions are fulfilled the readdressing takes place. That can be obser-
ved with the Analyser: First the missing slave appears red. Being attached the sla-
ve "0" appears grey in the overview with hold time first. Shortly after this it
disappears again, while the slave which missed before is represented green
again. If the representation remains grey one of the conditions specified above is
not fulfilled.
7.3.7
Control of Corrective Measures
Especially the "Overview with Hold Time" and the "Advanced Statistics" are appro-
priate for a check of corrective measures in the net. Changes can be pursued di-
rectly on the screen if a short holding time has been entered.
7.4
Error Diagnostics and Optimization of the Application
The current digital and analog data, as well as the safety data "free" and "released"
are available in the data mode provided that they do not vary to quickly. So the
course of a process in the automatic or in the manual operation mode can be pur-
sued and Errors can be found easily.
The trace mode is another very flexible instrument: The data of the application are
captured and displayed in a 150 µs rhythm. The internal and the external trigger,
as well as a recording filter permit the user to examine individual sections of an
application. The large amount of data which a trace makes available can be used
for example in order to examine or to optimize timings. Furthermore sending para-
meters to a slave and their effect can be examined.
External devices can be switched over the trigger output of the trace mode. For
example: a camera which records movements of the application. In this way e.g.
courses of motion or errors can be represented and optimized afterwards.
With Safety at Work-applications a trace with the function "Safety Monitor" can be
evaluated which represents each condition of change of the safety related slave.
(fig.15).
7.5
Development Accompanying Control of Slave and Master
New product developments of master, repeater, IC or slaves can be tested with
the analyser intensively as soon as they can be placed as devices into a test net.
The analyser becomes here a tester of any communication situation in a heavily
loaded or unloaded net or device.
Subject to reasonable modifications due to technical advances.
42
SIEMENS AG · Low-Voltage Controls · Phone +49 911 895 59 00 · Fax +49 911 895 59 07 · Internet: http://www.siemens.com/lowvoltage/technical-assistance
Using the Analyser
s
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