User Manual PROFview XL 9 Problem Recovery
Problem Questions, causes & problem recovery
Station scan
• Stations missing Possible causes:
• Duplicated addresses may have assigned
• The master simulator is being used, and the baud rate has just been changed:
- The stations have not yet been synchronized to the new baud rate.
- The appropriate station does not support automatic baud rate change.
- The appropriate station does not support the required baud rate.
• The ID numbers are missing. How to solve this problem:
• Use the master simulator.
Topology scan
• Button is disabled (grayed-out) Questions:
• PBT connected to PC and power supply ("Power On" LED)?
• PBT detected by application software (→ status bar)?
• PBT connected correctly to the PROFIBUS plant?
• Master station disconnected from bus via bus disconnector?
• Bus static and differential voltage o.k. (bus status LED = yellow)?
• Bus termination connected to both ends and powered? (bus status LED = yellow)?
• At least one station highlighted in the station list as "to be measured"?
• provides incorrect results Questions:
• PBT connected directly to a powered termination resistor on one of the two
segment ends?
• Master station disconnected from bus via bus disconnector?
Possible causes:
• Different cable types (with different wave resistances)
• There is an error in the physical bus characteristics and there are significant signal
faults.
• The distance cannot be determined
for various stations.
How to solve this problem:
• Cancel the topology scan.
• Highlight this/these station(s) in the station list as "Do not measure".
Error counter
• Counts continuously Possible causes:
• An incorrect baud rate has been selected (→ Baud rate scan)
• Duplicated addresses may have assigned
• There is an error in the physical bus characteristics and there are significant signal
faults.
Master simulator
• Button is disabled (grayed-out) Questions:
• PBT connected to PC and power supply ("Power On" LED)?
• PBT detected by application software (→ status bar)?
• PBT connected correctly to the PROFIBUS plant?
• All masters disconnected via bus disconnector (bus status LED = yellow or red)?
• Bus static and differential voltage > 0.1 V (bus status LED = yellow or red)?
• Bus termination connected to both ends and powered?
The measurements "All stations", "One station" and "Logger"
• cannot be started Questions:
• PBT connected to PC and power supply ("Power On" LED)?
• PBT detected by application software (→ status bar)?
• PBT connected correctly to the PROFIBUS plant?
• At least one station highlighted in the station list as "to be measured"?
Additionally for the "One station" measurement:
• One station selected?
How to solve this problem:
• Provide for transmission activity on the PROFIBUS line (e.g. start the master simula-
tor).
Printing and exporting
• The relevant data field is disabled. How to solve this problem:
• carry out the required measurement for the selected measuring point and the rele-
vant station.
PROFview XL 37
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