Knowledge Base

First you should check that the TCP-IP configuration is correct!

Symptoms

The PcVue client station fails to connect to the server, with message lines something like this:

26/01/09,10:30:00:362,6,I,,1, ,2,Loading finished
26/01/09,10:30:26:434,3,W,,3074, broken ,2,Server->client connection, WEB_0S -> 10.0.0.16 26/01/09,10:30:26:434,3,I,,3188, ,2,WinSock error = 10054 WSAECONNRESET
26/01/09,10:30:26:434,3,I,,3240, ,2,The remote station has cut the connection

The messages reappear after each retry (by default once a minute). On the server side, only the normal message appears:

26/01/09,11:21:56:250,6,I,,1, ,1,Loading finished

Possible causes

A PcVue server listens to the network on port 1981 ( by default). If this port is already in use no client station will be able to connect to it. This can occur if:

• The main PcVue executable, sv32.exe, still remains in memory after it has been shut down. This has been seen as a common problem with some installations of version 8.10. This does not stop PcVue from being re-started and sometimes results in several sv32.exe executables remaining in memory.
• Other software on the PC is using port 1981.

Diagnosis

You can diagnose this by running the network diagnostic utility netstat -a from a Command prompt when PcVue is not running. (in this example, ‘aragorn2’ is the server’s name).

This result indicates that there is software listening on port 1981 (in the line highlighted in red).

You can run and examine the LAN traces. (The key indicators are highlighted below in yellow.)

TRACE(1,3, “3”);

On the server side message lines like this are displayed.

26/01/09,11:27:37:734,6,I,,1, ,1,Loading finished
26/01/09,11:27:37:750,3,T,,0, ,1,0 #Socket bind error = 10048 PortNumbers = 1981
26/01/09,11:27:37:781,3,T,,0, ,1,0 #WSAEADDRINUSE Address already in use.

Whereas when all goes well one sees:

26/01/09,11:28:54:031,6,I,,1, ,1,Loading finished 26/01/09,11:29:10:375,3,T,,0, ,1,1 #CreateServerCxt DS1_0
26/01/09,11:29:10:406,3,I,,3070, ,1,Server->client connection OK, DS1_0S -> WEB_0C
26/01/09,11:29:10:406,3,T,,0, ,1,1 #CRemoteStation::OnServerCxtReady DS1_0S WEB_0C
26/01/09,11:29:10:406,3,T,,0, ,1,1 #CRemoteStation::OnCxtReady the WEB station is accessible
26/01/09,11:29:10:484,3,I,,1, ,1,First connection with the WEB_0C client.

Solution

Either: Restart the PC. This resolves the problem.

Or: Remove the sv32.exe processes remaining in memory (Using the Windows’ Task manager).