What the TCP Server mode does
In TCP Server mode, the bridge opens a real local serial port such as COM3 or COM7, listens on a TCP address and port, then forwards data in both directions between the serial device and the connected TCP client.
When this setup helps
- A remote test tool needs to connect to equipment attached to a field PC.
- A legacy RS232 or RS485 device needs to be reachable from another machine.
- You want to centralize serial access without moving the physical device.
- A network application expects a TCP endpoint, but the equipment only has serial.
Basic setup
- Connect the serial device to the Windows machine.
- Create a TCP Server binding in ComLinker.
- Select the real serial port.
- Set the listen IP address and TCP port.
- Match the baud rate, data bits, parity, stop bits, and flow control.
- Start the binding and connect from the remote TCP client.
Deployment checks
Check firewall rules, confirm the TCP port is not already in use, and make sure only trusted clients can reach the listening port in production networks.