tspark

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About tspark

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    Hi, I am New!

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  1. Hi Goran, Yeah I realise that the 'NST' is because its waiting for a command via Modbus, my issue is, I cant seem to communicate any commands over the Modbus system, Im not sure at this moment whether my issue is a Hardware communication issue, a program issue or a setting I haven't made in the ATV320 drives themselves. Cheers Tom
  2. Hi there, Im having issues controlling ATV 320 VSDs over Modbus RTU with a M221 plc, does anyone have any pointers for me to look at? I believe I Have set everything up correctly but when I run the program on the plc the atv's just stay in 'NST' state I have included screenshots if they are any use   My speed reference in this example is taken from the memory word %MW0 which I am inputting via a HMI   I have addressed all my ATVs accordingly in there setting with the correct Modbus parameters and selected Modbus under the FR1 configuration, am I missing anything?? Any help is appreciated as I am really struggling   Tom