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Chapter 6
NI-FBUS Function Reference
NI-FBUS Hardware and Software User Manual
6-34
ni.com
Return Values
E_OK
The call was successful.
E_INVALID_DESCRIPTOR
The descriptor you specified is not valid.
E_NOT_FOUND
The NI-FBUS Communication Manager could not find the
specified object.
E_SYMBOL_FILE_NOT_FOUND
The NI-FBUS Communication Manager could not find the
symbol file.
E_BAD_ARGUMENT
The object specified by index was that of a simple data type,
which must already be known to you.
E_SERVER_CONNECTION_LOST
The session established with the NI-FBUS Communication
Manager, under which the descriptor was opened, has been lost or
closed.
E_DEVICE_CHANGED
The device you specified is changed.
E_VFD_CHANGED
The VFD you specified is changed.
E_COMM_ERROR
An error occurred when the NI-FBUS Communication Manager
tried to communicate with the device.
E_RESOURCE
The NI-FBUS Communications Manager is unable to allocate
some system resource; this is usually a memory problem.
E_OBSOLETE_BLOCK
The block you specified is no longer valid.