/// <summary>
/// 读取坐标系缓冲区剩余空间大小
/// </summary>
/// <param name="nCardNum"></param>
/// <param name="crd">坐标系号，取值范围[1,2]</param>
/// <param name="pSpace">插补缓存的剩余空间</param>
/// <param name="count">（灵猴）轴数</param>
/// <param name="fifo">插补缓存区号，0：FIFO1 1：FIFO2</param>
/// <returns></returns>
public override short CrdSpace(short nCardNum, short crd, out int pSpace, short count = 1, short fifo = 0)
{
short nRtn = 0;
nRtn |= CMc.GT_CrdSpace(nCardNum, crd, out pSpace, fifo);
return(nRtn);
}