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