/// <summary>
/// 清除插补坐标系数据
/// </summary>
/// <param name="nCardNum"></param>
/// <param name="crd">坐标系号 1跟2</param>
/// <param name="count">不用管</param>
/// <param name="fifo">缓冲区号 fifo0 fifo1</param>
/// <returns></returns>
public override short CrdClear(short nCardNum, short crd, short fifo, short count = 1)
{
short nRtn = 0;
nRtn |= CMc.GT_CrdClear(nCardNum, crd, fifo);
return(nRtn);
}