S7-200 SMART free port communication
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Dear teachers, has anyone worked on examples of free-port communication using the S7-200 SMART? Could you share them with me? I’m working on a project recently, and the client has required CAN bus communication. I chose the SR20, which is a K-7110 RS485 to CAN conversion module from Beijing Kerui Xingye. How can I establish a connection between the CPU and the gateway module K-7110, and how do I proceed with the programming? Software programming is my weak point; I’m really bad at it~ I hope experts can offer some guidance~
This is not a problem with free-form communication, but rather an RS485 communication issue with the S7-200. For micro/win, an additional Modbus communication library needs to be installed; it contains the necessary communication modules, and settings can be made accordingly.
Could you explain it to me in more detail? I’ve always thought that a free port should be used!