status.i4.v = dio_display_conversion_type_c(device_indices.i4a.r,

	This routine returns the default device value display conversion
	type for a device or list of devices.

	device_indices	device index or array of device indices
	properties	property index or array of property indices
			(PRREAD -> reading property,
			 PRSET -> setting property)
			(If the first value is less than zero, all devices
			 use a property index which is equal to the absolute
			 value of this argument.)
	display_types	returned default display conversion types
			(constants of the form CNV_xxx which are found
			 in cbslib)
			(A value of NULL may be passed if no display types
			 are needed.)
	errors		returned ACNET status value or array of returned
			status values (A status of DBM_NOREC indicates that
			the requested PDB does not exist.)
	num_devices	number of devices in list

	This function returns status values as follows:

	OK			success
	DIO_BADARG		invalid property index or number of devices
	DIO_MEMFAIL		memory allocation failure
	negative value		other ACNET format error
	positive value		number of devices in error

	This function requires the following include files:

	dbprops_h, diolib_h, acnet_errors_h

	Related functions:

	dio_display_conversion_info_c, dio_display_attributes_c,
	dio_is_display_dec(_c), dio_is_display_short(_c), dio_scaling,

	C/C++ usage:

	short	errors[NUM_DEVICES];
	short	properties = -PRSET;
	int	status;
	static const int	device_indices[NUM_DEVICES] = {14430, 14431};
	int	display_types[NUM_DEVICES];
	int	num_devices = NUM_DEVICES;

	status = dio_display_conversion_type_c(device_indices,&properties,