Start and stop the TCPListener process
- Last UpdatedApr 24, 2025
- 2 minute read
Follow this procedure to start listening to traffic on the ports used for polling the field.
Before you begin
Complete the steps in one of the following sections:
To start and stop the TCPListener process
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On the desktop, double-click the Windows PowerShell for DNA shortcut.
Windows PowerShell for DNA opens.
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Execute the following command:
TcpListener
The TCPListener main window appears.

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In the Ethernet Interface field, select the name of the product LAN where the TCPListener application resides.
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In the Configuration file field, select the name of the XML file configured through either the automatic or manual configuration method.
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Select the Debug Level.
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Select Start.
Any error messages appear in the main body of the TCPListener dialog box.
Note: The number of online clients and OASyS DNA Socket Server Relay Services appear in the title of the dialog box.

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To stop the TCPListener process, select Stop.
Note: If there are numerous connections, it may take a while for the application to stop.
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Select View Configuration And Log to open the configuration and log files.
TCPListener uses the default program configured in the Operating System to open files with a .log extension. Follow the Operating System instructions to configure the default program you want to use.