dio_insert_pdb_lst

	status.i4.v = dio_insert_pdb_lst(device_indices.i4a.r,
					 properties.i2a.r, errors.i2a.r, 
					 num_devices.i4.r)

	This routine inserts Process Data Block (PDB) information for devices
	into the cached pool of PDBs.  This saves time if you expect to
	subsequently perform several single device operations.
	
	device_indices	device index or array of device indices
	properties	property index or array of property indices
			(PRREAD -> reading property,
			 PRSET -> setting property,
			 PRBSTS -> basic status property,
			 PRBCTL -> basic control 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.)
	errors		returned ACNET status value or array of returned
			status values
	num_devices	number of devices in the list

	This function returns status values as follows:

	OK			success
	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_delete_pdb, dio_delete_pdb_lst, dio_delete_pdb_all, dio_get_pdb,
	error_in_list(_c)

	C/C++ usage:

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

	status = dio_insert_pdb_lst(device_indices,&properties,errors, 
				    &num_devices);