Rockwell Automation 2711P Creating Modbus Applications - Manual (Page 21)

Publication 2711P-UM002B-EN-P - March 2007
Configuring KEPServer Drivers for Modbus 21
Step 7 -Select Socket Usage (Applies to Modbus/TCP only)
The New Channel - Socket Usage dialog controls how the Modbus
Ethernet driver will utilize Windows sockets when establishing a
connection to the target device. For a normal Modbus Ethernet
enabled device, the default Use Multiple Sockets for device
connection (checked) mode of operation is designed to give the best
performance from the driver.
Normally, the Modbus Ethernet driver will use a Windows socket for
each device on the network. When using a new socket connection for
each device, the Modbus Ethernet driver maintains that socket as an
active connection. Normally this provides a very high level of
performance since the driver does not need to reestablish a
connection each time it needs to read or write data to a given device.
For more information on using Sockets in a Modbus RTU bridge
application, refer to the online help.
Click Next.