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sending command via rs485 to vfd

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HELLO

 

  I have the M91-2-ua2 plc

 

I have also a  vfd  that work with rs 485.

how  can I send commands via the rs232 port?  

 

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You've not given us a lot to go on.

I'm guessing you want to control the VFD via RS485.

What protocol will you be using?  Drive manufacturer and model?  Link to the drive manual?

Joe T.

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If you look in the Help file (in U90 ladder) you will find all you need.  In the main index Content\Communications.  And in Examples\Modbus\Modbus Master for an example.

Believe it or not, Help files are an excellent primary source of information, and where we all got the knowledge from in the first place.  If you have further questions once you've built your own program based around the examples then we are glad to help.

cheers, Aus

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Thank for your answer.

I know the help files are excelent.

I learn all I know for the programming of unitronics from it

But still didnt find an answer.

I will check again. 

Thank you

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