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Before attempting to connect Kepware's Allen-Bradley ControlLogix Ethernet Driver to a SoftLogix Soft PLC running on the same PC, users should ensure the following:

• RSLinx does not have any Ethernet drivers running on the PC.
• The EtherNet/IP Messaging Module software is installed in the SoftLogix virtual chassis.
• The Device ID is set to "<specific_IP_address_of_PC>, 1, <PLC_CPU_slot>" instead of "127.0.0.1, 1, <PLC_CPU_slot>". For example, if the PC's IP Address is "192.168.3.4" and the SoftLogix CPU is in slot 2 of the virtual chassis, then the Device ID should be set to "192.168.3.4,1,2".
  
  Note: To locate the Device ID setting in KEPServerEX, right-click on the device. Then, select Properties and open the General tab.