# Industrial Ethernet – Modbus TCP Configuration

When you select the Modbus TCP Server protocol, the Industrial Ethernet Configuration dialog updates to show Modbus TCP-specific options:

Property | Description
--- | ---
Max Connections | Define the maximum number of connections allowed on the Modbus TCP server.
Idle Timeout | Define the time in seconds that the server can be idle before timing out.
Enable User Data Bypass | Check the Enable User Data Bypass checkbox to set user data to be written immediately to the UserData attribute. Otherwise, the data does not appear until the Set User Data service is executed.