/// <summary>
/// 使用前瞻时，把前瞻缓存区的数据压入运动缓存区
/// </summary>
/// <param name="nCardNum"></param>
/// <param name="crd">坐标系号，取值范围[1,2]</param>
/// <param name="fifo">插补缓存区号，0：FIFO1 1：FIFO2</param>
/// <returns></returns>
public override short CrdData(short nCardNum, short crd, short fifo = 0)
{
short nRtn = 0;
nRtn |= CMc.GT_CrdData(nCardNum, crd, new IntPtr(), fifo);
return(nRtn);
}