B&B Electronics MESR424T_D-MT_D-SC - Manual - Manual (Page 29)

3. Setup and Connections
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Figure 34. Modbus TCP Settings Screen
c. TCP Client Settings
1. Connect to Port identifies TCP port to be used by the Modbus Gateway in
TCP client mode. Valid value range is from 1 to 65535.
2. Response Timeout is the maximum amount of time to wait for a response
to a request that is sent to the device connected through TCP. Valid value
range is from 1 to 65535.
3. Save settings by clicking the “Save” button.
b. TCP Server Settings
1. Listen on Port identifies TCP port to be used by the Modbus Gateway in
TCP server mode. Valid value range is from 1 to 65535.
2. “Limit the number of connections to” pull down box allows you to control
the number of simultaneous TCP clients that can be connected. Choices
are 1 through 16.
3. Connection Filter Mode controls which TCP clients are able to connect.
The default is: “and allow everyone to connect.”
a. You can select “allow specific IP addresses to connect.”
This filter is limited to 4 IP addresses.