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Guest Dariusch

App. with 5 encoders

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Hi. I am doing a application with 5 encoders for positioning. I have a Mitsubishi A1SH. What is the best thing/way for handeling 5 encoder, when i have to read data for all 5 encoder at the same time? I thought of using profibus? Does someone have any ideas??? Thank you Dariusch

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It depends on what exactly you want to do. Do you need single ended or quadrature encoders (or maybe absolute?)? What is the accuracy you need and when do you need to read the position (or velocity) information (maybe only when encoders are turning slowly?) What is the distance between encoders and PLC?

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The distance between PLC and the encoders is from 9-20 meters. I think incremental encoders wil do fine, and the accurancy is not so importent. The application is for polishing sink, and therefore the rotation of the polishier has to slow down in the corners. All five station is on at the same time. But what I have been told by my supplyer, is that encoders for profibus only comes with absolute!

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