Troubleshooting
Manual
Page 40
© 2013
12 Troubleshooting
Problem
Causes and remedies
The display of the
PROFIBUS Tester 4 remains
blank.
Possible cause:
•
The PROFIBUS Tester 4 always needs an additional
external power supply.
Remedy:
•
Use the supplied external AC adapter to connect the tool to
the mains power supply.
•
When connected directly to a 24 VDC power supply: check
the voltage at the terminals
Alternative cause:
•
The tool is defective.
Remedy:
•
Return the tool for servicing (see page
39
)
The display shows the
following error message:
“USB ERROR - Refer to
manual or disconn. for stand-
alone mode”.
Possible cause:
•
This error message can be caused by poor physical
connection via USB (“loose” contact).
Remedy:
•
Check the USB cable and connector.
The baud rate is not detected
automatically on a live
PROFIBUS.
Possible cause:
•
Massive disturbances in the bus physics.
Remedy:
•
Manually set the baud rate and repeat the test.
If you need to contact Softing's support team, you will find the contact data on
the back cover of the manual.
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