我采用数据采集卡PCI-6281做AOTF频率控制字的驱动，将一系列得到的16位2进制数，按一定的速率输出到P0,P1口，总是出现以下提示：
Measurements: Selected lines do not support buffered operations.
Ensure only lines that support buffered operations are being used in the task. If using change detection, the task must be changed to non-buffered hardware timed single point to support these lines.
有高手可以指点一下么，附件里是程序。
