status.i4.v = dio_dev_node(device_indices.i4a.r, properties.i2a.r,
				   nodes.i4a.r, errors.i2a.r

	This routine returns the source node for a device and property (DI/PI).
	If "num_devices" is specified, nodes for a list of devices/properties
	can be retrieved.

	device_indices	device index or array of device indices
	properties	property index or array of indices
			(If the first value is less than zero, all devices
			 will be requested with a property index which is
			 equal to the absolute value of this argument.)
			(constants are in 'dbprops')
	nodes		returned data source node or array of nodes
			(A value of NULL can be passed for this argument if
			 only caching of the node information is desired.)
			(constants are in 'nodedefs')
	errors		returned ACNET status value or array of status values
	[num_devices]	number of devices (default is 1)

	This function returns status values as follows:

	OK			success
	DIO_BADARG		invalid number of devices passed
	DIO_MEMFAIL		memory allocation failure
	negative value		ACNET format error indicating overall failure
	positive value		number of devices in error indicating partial

	This function requires the following include files:

	dbprops_h, diolib_h, nodedefs_h, acnet_errors_h

	Related functions:

	dio_node, dio_dpreq_info, dio_cache_property_info_c, error_in_list(_c),
	dio_enable_obsolete_dev_info, dio_disable_obsolete_dev_info

	C/C++ usage:

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

	status = dio_dev_node(device_indices,&properties,nodes,