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AS-Interface Analyser
5.2
Installation
The package consists of the analyser as a data collector and of a PC software for
the evaluation of the data.
The hardware can be connected at any place in the net via the marked inputs
AS-i + und AS-i -. Connect the analyser over the characterized inputs like a slave
at any place in the AS-Interface net without interrupting the network. The analyser
is supplied from there and is ready for analyzing. It immediately begins with the
storage of data from the online statistics. If separated from the voltage supply the
data stored are lost.
The additional trigger in- and -outputs are needed for the trace mode only. The
trigger input reacts to voltage changes between of 18 ... 30 V. The trigger output
changes between 0 V und +5 V and can be used for the control of external devices.
The provided software (setup_en.exe) must be installed on a PC or a notebook.
The provided RS232 cable, possibly combined with a suitable RS232/USB adap-
ter serves as a cable connection between PC and analyser. With the first call of
the software the COM interface must be specified in the menu "Options / AS-Inter-
face Analyser Hardware".
Afterwards the representation of the online statistics stored in the analyser starts
automatically wit the start of the software (for exception see chapter 5.7.8).
5.3
Online Statistics (Standard Mode)
The standard mode with the "Online Statistics" is the mode most commonly used.
The telegrams in the analyser are here statistically evaluated and handed over in
a second rhythm to the PC for displaying and for further mathematical functions.
The results are very simple to use and to interpret. They are immediately available
and give an overview of the functions in several stages and of the possible errors
in the net (fig. 3).
This mode is applicable for the logging of the actual condition as well as for long
term analysis. The analyser begins to store data directly after being attached to the
Subject to reasonable modifications due to technical advances.
13
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Functions of the Analyser
Within the analyser a galvanic separation between net and PC, as
well as to the trigger input exists. The trigger output is fed over the
RS232 interface to the PC and may be loaded with maximally 2 mA.
The trigger input must be fed from a PELV power supply.
The function of the analyser is signaled by 3 LEDs. However, the
meaning depends on the operation situation.
• In the normal operation mode with an attached notebook the first
LED "green" signals that the analyser is supplied from the AS-In-
terface net; the second LED marked with "Ser.act." shines yellow
during the communication with the PC. The third LED shows after
a start of a trace the trigger condition: "green" means "trigger re-
leased", "red" means "trigger not released".
• In operation without PC the LED gives an overall status of the net
traffic (compare chapter 5.3.6).
s
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