status.i4.v = dio_negative(device_index.i4.r)

	This routine sends a "negative" command to a device.

	device_index	device to control

	This function returns ACNET status values as follows:

	OK			success
	DIO_NOATT		negative command does not exist for this device
	DIO_SETDIS		DIO settings are disabled
	DBM_xxx			database access error
	DPM_xxx			datapool access error

	This function requires the following include files:

	diolib_h, acnet_errors_h

	Related functions:

	dio_neg_lst, dio_cntrl_dev(_c), dio_positive

	C/C++ usage:

	int	status;
	int	device_index = 14430;

	status = dio_negative(&device_index);