Internal error codes of the TwinCAT TCP/IP Connection Server
Code (hex) | Code (dec) | Symbolic constant | Description |
|---|---|---|---|
0x00008001 | 32769 | TCPADSERROR_NOMOREENTRIES | No new sockets can be created (for FB_SocketListen and FB_SocketConnect). |
0x00008002 | 32770 | TCPADSERROR_NOTFOUND | Socket handle is invalid (for FB_SocketReceive, FB_SocketAccept, FB_SocketSend etc.). |
0x00008003 | 32771 | TCPADSERROR_ALREADYEXISTS | Is returned when FB_SocketListen is called, if the TcpIp port listener already exists. |
0x00008004 | 32772 | TCPADSERROR_NOTCONNECTED | Is returned when FB_SocketReceive is called, if the client socket is no longer connected with the server. |
0x00008005 | 32773 | TCPADSERROR_NOTLISTENING | Is returned when FB_SocketAccept is called, if an error was registered in the listener socket. |