Echelon OpenLDV - Manual (Page 56)

48 Using the OpenLDV API
Return Code
Numeric
Value Description
LDVX_OPEN_FAILED 12 The remote network interface
(RNI) could not be opened.
LDVX_CLOSE_FAILED 13 The remote network interface
(RNI) could not be closed.
LDVX_READ_FAILED 14 The application failed to read
the message as a result of a
generic failure during the call
to ldv_read(). If you
encounter this return code
persistently, close the current
session and start a new one,
because the current session
might have failed.
LDVX_WRITE_FAILED 15 The application failed to write
the message as a result of a
generic failure during the call
to ldv_write(). If you
encounter this return code
persistently, close the current
session and start a new one,
because the current session
might have failed.
LDVX_REGISTER_FAILED 16 The application failed to
register the Windows event
object for event notification.