Rotary Encoder Object

crgwbr

Hey Everyone,

I'm using the rotary encoder object with a TRD-S2500·encoder from Automation direct.· Everthing's working great, I just have one question.· I noticed that the encoder has A, B, and Z outputs.· I hooked up the A and B outputs and haven't touched the Z output.· Any one know what the Z output does?

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NerdMaster
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Michael Chadwick

The Z is an index pulse that happens once per revolution.· It is used to set a fixed start point in motion applications.·

In the past I've used·a switch to indicate a general home position, which would trip when the motion system was near home within·a full revolution of the encoder.· To home, the·system would·slow down to a crawl when it saw the switch close, then·look for the Z pulse to indicate 0 position.· The position counters were cleared when the Z pulse happened, which gives a precise and repeatable home position.


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MRC

crgwbr

Thanks, guess I won't be needing to look at it then. The encoder will be traveling at a max 30 degrees.

Thanks Again,
crgwbr

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squidx

Hi crgwbr, I have the same encoder, but I'm not sure about the wiring hookup. Are you using the Rotary Encoder Object, and if so are you connecting the Out A and Out B to the first and second pins you enumerated?

Thanks, Alex

Post Edited (squidx) : 1/31/2007 10:21:35 PM GMT

crgwbr

Yes, I am useing the rotary encoder object. Out A is the first pin of the rotary encoder object. Out B is Out A + 1 (Out A = P0 Out B = P1).

Hope this helps,
crgwbr

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