P R O F I B U S P
O W E R
H
U B
S
E G M E N T
C
O U P L E R
PROFIBUS Commissioning
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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3.
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4.
Select the directory where you would like to store the converted
GSD files.
5.
Convert the GSD files by clicking on the "Process GSD -->“ button
Another window appears with information about the result of the conver-
sion process.
5.2.2
Additional Information about Watchdog time
PROFIBUS devices can activate a mechanism that monitors each time
interval in the cyclic data exchange process (also referred to as user
data exchange) to ensure that the PROFIBUS master is still active. The
time is measured in the PROFIBUS slave.
If the response monitor is active and the time (T
WD
) since the last cyclic
polling process has expired, the device stops the cyclic data exchange,
reverts to its original status (Wait_prm) and secures the status of the
outputs.
The time value T
WD
and the signal for activating the response monitor
are transmitted from the PROFIBUS master to the PROFIBUS slave in
the parameter telegram at start-up (transmitted during the cyclic data
exchange). The time T
WD
is generally defined specific to the user (not
device-specific, not in the GSD). Lesser values are limited by the cycle
times.
The time T
WD
is usually entered via the configuration tool. The watch-
dog setting in the DP/PA gateway is transparent. On some configuration
tools, the response monitor is preset once for the PROFIBUS master.
You can select one or more files for conversion by pressing the CTRL or
SHIFT keys. Files preceded by a "+" symbol are the result of a previous
conversion. These files cannot be converted again and an error message
appears if an attempt is made to do so. Files beginning with a "-" symbol
have not been converted and can be if required. Double-click to open and
view or edit a file.
•
Watchdog reprogramming during cyclic communication!
DPV1 slaves leave cyclic communication because the DPV1 standard
does not permit any Watchdog change during operation.
The BIS of the DP/PA Gateway performs diagnostics in the DTM and cy-
clically to determine whether the Watchdog time (TWD) is sufficient.
Note
Warning
Note
