Siemens as-interface ANALYSER 3RK1 904-3AB01, Manual, Page: 15 / 46

AS-Interface Analyser Functions of the Analyser
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Subject to reasonable modifications due to technical advances. Printed in Germany
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5.3.2 Overview with Hold Time
In the representation "Overview with Hold Time" the holding time is put back auto-
matically to that time indicated in the title. A slave only remains "yellow" or "red", if
it exhibited the error rate in the elapsed period. So the success and failure of chan-
ges in the net ca be verified quickly.
The Hold Time can be changed in the menu under " Options / Statistics " between
1 s and "infinite" in many stages. This setting is stored and taken over for the next
start of the analyser.
5.3.3 Advanced Statistics
By switching to the tab "Advanced Statistics" the user gets the number of repea-
ted/missing messages for each slave as well as the number of master calls to each
slave. It gives detailed information from the overview without the overall evaluation
by the traffic light representation.
Fig. 4: The "Advanced Statistics" shows quantitatively, how frequently repetitions of the
data calls were necessary.
The analyser shows exactly those slaves that are available in the net
and are taken up to communication. It cannot recognize slaves that
are contained in the configuration of the master, but already failed
before the connection of the analyser. These slaves appear in the
protected mode as "Configuration Error" in the master or in the con-
trol.
If the master is shifted during the measurement in the offline mode
all slaves are represented in "red" even if the data exchange could
function. In this manner the analyser displays the intervention in the
function of the network.