Hi, everyone,
I have a Siemens S7-300 plc (cpu 314), it has a CP 343-1 module installed. Now I need to program my own windows based application (using Visual Basic or Visual C++) to exchange data with the S7 plc via TCP/IP. In order to do that, I think I need to know how the Siemens S7 ethernet protocol works, but I couldn't find the s7 protocol specification anywhere. Is there anybody who knows Siemens s7 TCP/IP protocol or has a s7 plc TCP/IP communication sample code ? Please help.
Thank you very much.
I have a Siemens S7-300 plc (cpu 314), it has a CP 343-1 module installed. Now I need to program my own windows based application (using Visual Basic or Visual C++) to exchange data with the S7 plc via TCP/IP. In order to do that, I think I need to know how the Siemens S7 ethernet protocol works, but I couldn't find the s7 protocol specification anywhere. Is there anybody who knows Siemens s7 TCP/IP protocol or has a s7 plc TCP/IP communication sample code ? Please help.
Thank you very much.