NPORT5230编程要点：
服务器控制：
一、 初始化：Declare Function nsio_init “IPSerial.dll” () as long
NSIO_OK(0): OK；
石油是怎么形成的NSIO_SOCK_INIT_FAIL（-201）： Socket initialize error.
NSIO_THREAD_ERR（-3）：Create background thread fail.
二、 结束：Declare Function nsio_end "IPSerial.dll" () As Long
NSIO_OK(0): OK；
NSIO_SOCK_ERR（-202）：Communication with NPort error
三、 复位：Declare Function nsio_retrver "IPSerial.dll" (ByVal rver_ip As String, ByVal password As String) As Long
房屋交易合同
NSIO_OK(0): OK；
NSIO_TIMEOUT（-203）：Communication with NPort timeout
NSIO_NOT_ALIVE（-102）：NPort is not alive. Maybe the NPort is power down or network cable is disconnected 天人互动
NSIO_SOCK_ERR（-202）：Communication with NPort error
四、 是否活动：Declare Function nsio_checkalive "IPSerial.dll" (ByVal rver_ip As String, ByVal 党风廉政谈心谈话timeout As Long) As Long
rver_ip： NPort IP address, specified by null terminated string. Ex: "192.168.127.254".
timeout： The timeout value for connecting NPort in milliconds.
NSIO_OK(0): OK；
NSIO_SOCK_ERR（-202）：Communication with NPort error
NSIO_TIMEOUT（-203）：Communication with NPort timeout
恋空电影NSIO_NOT_ALIVE（-102）：NPort is not alive. Maybe the NPort is power down or network cable is disconnected
端口控制：
一、 打开端口：Declare Function nsio_open "IPSerial.dll" (ByVal rver_ip As String, ByVal port_index As Long, ByVal 与的拼音timeouts As Long) As Long
rver_ip： NPort IP address, specified by null terminated string. Ex: "192.168.127.254".
port_index： The rial port number of the NPort. 1 for 1st port, 2 for 2nd port, and so on.
Timeouts： The timeout value for communicate with NPort in milliconds.
Succeed：Port id.
活字开头的成语NSIO_BADPARM（-2）：Bad parameter
NSIO_MEMALLOCERR（-4）：memory allocate error
NSIO_SOCK_INIT_FAIL（-201）： Socket initialize error.
NSIO_CONNECT_FAIL（-200）：Connect to NPort fail. Maybe the NPortis power down or network cable is disconnected.
樱花的季节NSIO_SOCK_ERR（-202）：Communication with NPort error
NSIO_TIMEOUT（-203）：Communication with NPort timeout
