syed pervez posted a topic in Other PLCsI am trying to communicate Delta HMI Dopsoft -W software on PC and corresponding PLC program in Delta PLC ES2 .I don't have Delta HMI at the movement.I have prepare communication cable myself. This cable communicate properly when I simulate the plc Software with delta PLC software WLPsoft. But it dosn't communicate with online simulation with Delta HMI software DOPSoft-W .but whenever Ipressed any button on PC HMI I can see the PLC communication indication LED blinking every time. I have set all the parameters of communication many time but no use. I am using comm1,9600,even,1 and station 0 or some time station 1. but I get the communication error 7 and 10. evey time and no action. Every time I compile my program in dopsoft it compile with no errors, and if i go for off line simulation it works fine. I have put the correct read and write address of my used components, like X0, X1 and Y0 and data memory D400 same in DOPSoft and PLC. could any body help in this situation. I can also attached the image files of my PLC Ladder program and HMI program on PC later on.