dio_query_tuner(logging.i4.r, read_timeout.i4.r, set_timeout.i4.r,
			dbm_timeout.i4.r, stale_notify.i4.r

	This routine returns parameters used globally by DIO routines and
	set by a call to dio_tuner(_c).  If any of the returned argument
	values is not needed, a value of NULL can be passed for that

	logging		returned error logging status
			(TRUE -> log DIO errors (Could happen at 15 Hz!),
			 FALSE -> don't log DIO errors (default))
	read_timeout	returned number of seconds to wait for reading requests
			(default is 2 seconds)
	set_timeout	returned number of seconds to wait for setting requests
			(default is 4 seconds)
	dbm_timeout	returned number of seconds to wait for database requests
			(default is 10 seconds)
	stale_notify	returned stale data notification flag
			(TRUE -> return a value of DIO_STALE for stale data
				 requests (default),
			 FALSE -> return a value of OK for stale data)
	[cache_delete]	automatic cache deletion flag
			(TRUE -> delete the DIO cached information for any
				 device whose database information is
				 modified using DABBEL,
			 FALSE -> ignore database modifications (default))

	This function requires the following include files:

	cnsparam_h, diolib_h, acnet_errors_h

	Related functions:

	dio_tuner(_c), dio_read_db_timeout

	C/C++ usage:

	int	logging;
	int	read_timeout;
	int	set_timeout;
	int	dbm_timeout;
	int	stale_notify;
	int	cache_delete;