Chapter 6
NI-FBUS Function Reference
©
National Instruments Corporation
6-15
NI-FBUS Hardware and Software User Manual
Return Values
E_OK
The call was successful.
E_INVALID_DESCRIPTOR
The input descriptor is invalid.
E_MULTIPLE
There are identical block tags.
E_ORDINAL_NUM_OUT_OF_RANGE
The ordinal number is out of the device range.
E_COMM_ERROR
An error occurred when the NI-FBUS Communications Manager
communicated with the device.
E_NOT_FOUND
There is no such block in the device or VFD with the specified tag.
E_OBSOLETE_DESC
The input descriptor is no longer valid. It was closed before
nifOpenBlock
completed.
E_RESOURCES
A system resource problem occurred. The resource problem is
usually a memory shortage.
E_SERVER_CONNECTION_LOST
The session established with the NI-FBUS Communications
Manager for this descriptor has been closed or lost.
E_BAD_DEVICE_DATA
The device returned some inconsistent information.