协调器发给终端设备报错 ZMacTransactionExpired 0xf0，有时成功，有时报错

为什么协调器发给终端设备都会报错 F0??能不能在协调器单播的时候哪里可以修改 缓冲终端数据时间，等待终端poll

HDLApp_DstAddr.addrMode = (afAddrMode_t)Addr16Bit;
      HDLApp_DstAddr.endPoint = HDLAPP_ENDPOINT;//目的端点
      HDLApp_DstAddr.addr.shortAddr=remoteNodeShortAddr;
     
      if ( AF_DataRequest( &HDLApp_DstAddr, //AF远程地址类型
                           &HDLApp_epDesc,  //源端点描述符
                           HDLAPP_CLUSTERID,//族ID
                           (byte)dataLen - SADDR_EXT_LEN,//数据包字节数 
                           (byte *)(data + 1 + 2 + 8),//数据包           00 01 20 00 67   46   0F
                           &HDLApp_TransID,//
                           AF_DISCV_ROUTE,
                           AF_DEFAULT_RADIUS ) == afStatus_SUCCESS )//
。。。。。。。。。。

          //AF发送数据请求确认
        case AF_DATA_CONFIRM_CMD:
          afDataConfirm = (afDataConfirm_t *)MSGpkt;
          sentEP = afDataConfirm->endpoint;
          sentStatus = afDataConfirm->hdr.status;
          sentTransID = afDataConfirm->transID;
          (void)sentEP;
          (void)sentTransID;
          // Action taken when confirmation is received.
          if ( sentStatus == ZSuccess )
          {
            HalUARTWrite(HAL_UART_PORT_0,&sentStatus,1);//OXOO 
          }
          else
          {
            HalUARTWrite(HAL_UART_PORT_0,&sentStatus,1);//0XF0
          }
          break;

#define ZMacTransactionExpired      0xf0//

协调器发的快，终端设备poll rate很高的话，有可能出现这个情况。