B&B Electronics MESR321_SL_ML - Manual - Manual (Page 28)

Setup and Connections Vlinx MESR321 Modbus Gateway
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MESR321-xx_R001_2113m
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Figure 26. 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.