FMC Corporation - Talstar 80 Benutzerhandbuch
Seite 70
Troubleshooting
Proline Promass 80 PROFIBUS PA
70
Network structure
Check permissible fieldbus length and number of spurs.
Basic current
Is there a basic current of min. 11 mA?
Bus address
Check bus address: make sure there are no double assignments
Bus termination
(Termination)
Has the PROFIBUS network been terminated correctly?
Each bus segment must always be terminated with a bus terminator at both ends (start and
finish). Otherwise there may be interference in communication.
Current consumption,
permissible feed current
Check the current consumption of the bus segment:
The current consumption of the bus segment in question (= total of basic currents of all bus
users) must not exceed the max. permissible feed current of the bus power supply.
System or process error messages
System or process errors which occur during commissioning or operation can be displayed via the local display or an
operating program (e.g. FieldCare) in the ACTUAL SYSTEM CONDITION function.
Other error (without error message)
Some other error has
occurred.
Diagnosis and rectification