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

	This routine returns the alarm acknowledge mask for a single
	device or a list of devices.  This mask indicates which console
	classes are allowed to acknowledge a particular alarm.

	device_indices	device index or array of device indices
	masks		returned alarm acknowledge mask or array of masks
			(A value of NULL may be passed if no mask is needed.)
	errors		returned ACNET status value or array of status values
	num_devices	number of devices

	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:

	cnsparam_h, diolib_h, acnet_errors_h

	Related functions:

	dio_alarm_list_id_c, dio_actual_alarm_list_id_c,
	dio_analog_alarm_handling_c, dio_analog_alarm_url_c,
	dio_analog_alarm_text(_c), dio_digital_alarm_text(_c),
	dio_get_db_alarm(_c), dio_get_alarm(_c), dio_get_alrm_lst,
	dio_extract_alarm_info_c, dio_dev_text(_c), dio_ext_text(_c),

	C/C++ usage:

	short	errors[NUM_DEVICES];
	int	status;
	static const int	device_indices[NUM_DEVICES] = {14430, 14431};
	int	num_devices = NUM_DEVICES;
	unsigned int	masks[NUM_DEVICES];

	status = dio_alarm_acknowledge_mask_c(device_indices,masks,errors,