I am using Modicon TSX Micro PLC and PL7 PRO V4.4 and TSXPCX3030 communication cable. I am using TER Port of PLC and UNITELWAY Communication driver with default settings. Still i am not able to connect to PLC using PL7 PRO software. I want to use Citech as my SCADA Package. Can anybody give me troubleshooting points how to communicate TSX Micro with PL7 PRO Software to upload/download PLC program.