Network Variable Library Error Codes
The Network Variable Library functions return negative values when they detect errors. The following table lists the error codes, defined constants, and error messages associated with functions in the the LabWindows/CVI Network Variable Library.
Use the CNVGetErrorDescription function to convert the error code, returned in the status parameter of Network Variable Library functions, into meaningful error messages.
Error codes are defined in the cvi\include\cvinetv.h file.
| Value | Defined Constant | Error Message |
| –6331 | CNVInvalidFolderNameError | Folder name is invalid |
| –6332 | CNVInvalidPathError | Path is invalid |
| –6333 | CNVNotAStructError | Data is not a struct |
| –6334 | CNVNotAScalarError | Data is not a scalar |
| –6335 | CNVSubscribeFailedError | The subscription to this network variable failed |
| –6336 | CNVResolveURLFailureError | URL could not be resolved for this network variable |
| –6337 | CNVProcessFailureError | The network variable process was not found or is not responding |
| –6338 | CNVServiceLookupFailureError | Service lookup failed for the server |
| –6339 | CNVHostUnreachableError | The server is not reachable |
| –6340 | CNVDNSFailureError | DNS lookup failed for the server |
| –6341 | CNVCouldNotRegisterMachineError | Could not register machine |
| –6342 | CNVNotSupportedInCallbackError | Not supported when thread is in a network variable callback function |
| –6343 | CNVNotSupportedOnRealTimeError | Not supported on real-time systems |
| –6344 | CNVEmptyDataError | Data is empty |
| –6345 | CNVWaitTimeElapsedError | Could not complete operation in specified time |
| –6346 | CNVInvalidConnectionAttributeError | Connection attribute is invalid |
| –6347 | CNVMissingDataAttributeError | Data attribute is not available |
| –6348 | CNVInvalidArraySizeError | Array size is invalid |
| –6349 | CNVNotAnArrayError | Data is not an array |
| –6350 | CNVInvalidNumberOfDimensionsError | Number of dimensions is invalid |
| –6351 | CNVInvalidBrowserHandleError | Browser handle is invalid |
| –6352 | CNVInvalidDataHandleError | Data handle is invalid |
| –6353 | CNVInvalidConnectionHandleError | Handle is invalid |
| –6354 | CNVInvalidDataTypeError | Data type is invalid |
| –6355 | CNVAttributeAccessError | Failed to get or set attribute |
| –6356 | CNVInvalidAttributeValueError | Attribute value is invalid |
| –6357 | CNVUnknownAttributeNameError | Could not recognize the attribute name |
| –6358 | CNVIPResolveError | Could not resolve IP address from gethostbyname |
| –6359 | CNVHostResolveError | Could not resolve host name |
| –6360 | CNVAlarmDisabledError | Disabled event or alarm was activated |
| –6361 | CNVWriteAccessDeniedError | Write access was requested and denied |
| –6362 | CNVReadAccessDeniedError | Read access was requested and denied |
| –6363 | CNVProcessServerDownError | Process server has shut down |
| –6364 | CNVItemDoesNotExistError | Item does not exist |
| –6365 | CNVThreadInitFailedError | Thread initialization failed |
| –6366 | CNVProcessManagerDownError | Process manager server is not available |
| –6367 | CNVInvalidPointNameError | Point name is invalid |
| –6368 | CNVInvalidProcessNameError | Process name is invalid |
| –6369 | CNVInvalidMachineNameError | Machine name is invalid |
| –6370 | CNVInvalidNetworkVariableNameError | Network variable name is invalid |
| –6371 | CNVNoWriteAccessError | Cannot write to read-only item |
| –6372 | CNVBufferFullError | Buffer is full |
| –6373 | CNVAlreadySubscribedError | User is already subscribed |
| –6374 | CNVNetworkDataError | Data retrieved from the network is incorrect |
| –6375 | CNVNoMoreEntriesError | There are no more data points to return from this query |
| –6376 | CNVCacheOverflowError | Cache overflow |
| –6377 | CNVNetworkError | Unspecified network error |
| –6378 | CNVWriterExistsError | Writer already exists |
| –6379 | CNVLogosStartupError | Logos sockets failed to start up |
| –6380 | CNVConnectingError | Socket timed out while trying to connect to peer |
| –6381 | CNVNoSuchServiceError | Service could not be resolved to a port address |
| –6382 | CNVDisconnectedError | Socket has been disconnected by its peer |
| –6383 | CNVNoSuchNameError | Name could not be resolved to a network address |
| –6384 | CNVConnectedError | Already has an input connection |
| –6385 | CNVInvalidObjectError | Object is not valid or does not exist any more |
| –6386 | CNVNotFoundError | Item not found |
| –6387 | CNVContextError | Command not allowed in this particular context |
| –6388 | CNVDuplicateError | Duplicate item or name already exists |
| –6389 | CNVInvalidPacketError | Packet is invalid |
| –6390 | CNVPendingError | Data necessary to complete this operation is not yet available |
| –6391 | CNVAccessDeniedError | A general access denied error occurred |
| –6392 | CNVOperationAbortedError | Operation was aborted |
| –6393 | CNVInvalidArgumentError | Argument is invalid |
| –6394 | CNVOutOfMemoryError | Could not allocate memory |
| –6395 | CNVNotImplementedError | Required feature is not available |
| –6396 | CNVUnexpectedError | Unexpected error occurred |
| –6397 | CNVCouldNotCreateMutexError | Could not create a required mutex |
| –6398 | CNVInvalidLibVersionError | Version of network variable DLL is incorrect |
| –6399 | CNVLibCouldNotBeLoadedError | Could not load network variable DLL |