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word to double word


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Version software: 1.33.236




I communicate with the frequency converter and the PLC via modbus. I have an absolute sensor connected directly to a frequency converter.

I read the parameters from the frequency converter. I need to read the value of the current revolutions (rev). I can read this using two parameters:

PAR543 - HighWord Actual Position
PAR544 - Actual LowWord position

It is a word ( int16 ) value. How do I combine them into a double word so that it shows me a real value, comparable to the revolutions shown in the frequency converter.

Thank you

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