selim Posted September 20, 2012 Report Share Posted September 20, 2012 Hi there; I need to access MI area of a V1040 PLC through ethernet. I had written a code that communicate with PLC via serial port before for an another project. Now, I am planning to modify my code to run under TCP. At PC side, I am working with Delphi XE2 using Indy TCP client component. I tested these components on my network with another computers and they work properly. At PLC side, I am using socket 1, port #20256 and Protocol is TCP Slave.. (I think these are default settings of socket 1 so I don't need to add a socket init FB to my ladder, am i right?) PLC info mode says that card is initialized and socket is connected. In addition, when I send a PCOM string, RX counter increases which showed on info mode but the most important thing is missing: There are no replies. The string I sent is a valid PCOM message which returns answer while I sent it over serial port and plus 6 bytes of ethernet header at the leading. Can you please help me to figure out where is my mistake? With my best regards Quote Link to comment Share on other sites More sharing options...
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