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Manual – Fieldbus Interface INTERBUS UFI11A
INTERBUS Interface
5.6 Return codes for parameter setting
Different return codes will be sent back to the master used for parameter setting in case
of inccorrect parameters. These codes will give the user a detailed insight into the re-
ason for an error. The return codes are usually structured according to EN 50170 with
the following elements:
•Error class
•Error code
• Additional code
These return codes apply to all communication interfaces of the UFI11A.
Error class
The element "Error class" classifies the type of error. The following error classes are
listed according to EN 50170.
Except for error class 8 = Other error, the error class is generated by the communication
software of the fieldbus card in case of communication problems. Return codes genera-
ted by the inverter system are all classified as error class 8 = Other error. You will get a
more detailed analysis of the error with the element "Additional code."
Error code
The element "Error code" gives you more detailed information on the reason for the error
within the "Error class" and is generated by the communication software of the fieldbus
card in case of communication problems. Error code = 0 (other error code) is the only
error code that has been defined for error class 8 = Other error. You will find detailed
information for this error in "Additional code."
Class (hex) Designation Meaning
1 vfd-state Status error of the virtual field device
2 application-reference Error in application program
3 definition Definition error
4 resource Resource error
5 service Error during service execution
6 access Access error
7 ov Error in object directory
8 other Other error (see Additional code)
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