arctinet Posted March 11, 2021 Report Share Posted March 11, 2021 Hi All, I'm battling a bit with modbus TCP multiplexing and missing messages. I have a Vision 430 with 5 VFD's. Some of the time, the messages go through quite fine. I send a PHR, the action is taken and the MODBUS status message is 0 - all good. Some of the time, I send a PHR, the action is taken but the status message shows as 4, then 5(timeout) but the VFD still receives the message and carries it out. Sometimes I send a PHR and nothing happens. Does anyone have an example of a successfully completed modbus TCP multiplexing that I can take a look at? Or perhaps any tips as to where I can look. My code looks a lot like the V280 Example with the exception of a connect at the beginning of each command and a disconnect after - sample attached. Many thanks! AF Example.vlp Quote Link to comment Share on other sites More sharing options...
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